{"industry":{"id":"ff619d7c-d7d7-485e-a05a-53fba07f33ed","slug":"telecommunications","label":"Telecommunications","description":"Business voice, fiber, UCaaS, and network services"},"topic":{"slug":"emergency-calling","label":"Emergency Calling","description":"911, E911, and NG911 for VoIP and SIP: registration, location accuracy, and call routing.","schemaKind":null},"answer":{"id":"b03c7fc2-b75b-407b-94c2-28d16792a61d","slug":"how-do-i-register-a-voip-phone-for-911","question":"How do I register a VoIP phone for 911?","answerMarkdown":"You register a VoIP phone for 911 by giving your provider the street address where the phone is used, plus the suite or floor if responders would need it. The provider ties that location to the phone. Providers collect this as part of setting up service. After that, your job is to change it when the phone moves and to confirm what's on file. The exact steps differ by provider, and Atlantech Online's documentation for its phone service shows what they look like in practice.","answerText":"You register a VoIP phone for 911 by giving your provider the street address where the phone is used, plus the suite or floor if responders would need it. The provider ties that location to the phone. Providers collect this as part of setting up service. After that, your job is to change it when the phone moves and to confirm what's on file. The exact steps differ by provider, and Atlantech Online's documentation for its phone service shows what they look like in practice.","answerHtml":"

You register a VoIP phone for 911 by giving your provider the street address where the phone is used, plus the suite or floor if responders would need it. The provider ties that location to the phone. Providers collect this as part of setting up service. After that, your job is to change it when the phone moves and to confirm what's on file. The exact steps differ by provider, and Atlantech Online's documentation for its phone service shows what they look like in practice.

\n","summary":"Registering a VoIP phone for 911 means giving your provider the street address where the phone is used, plus the suite or floor if responders would need it, so the provider can tie that location to the phone. Atlantech Online documents two options: a static address per phone number for a desk phone, and location taken from switches and access points for phones that move inside a building. It also documents a support-ticket route for corrections, and a 933 call that reads the registered address back.","publishedAt":"2026-07-20T16:31:58.611","verifiedAt":"2026-09-14T00:00:00","editorialStatus":"APPROVED","lastReviewedAt":"2026-10-10T02:57:29.036","nextReviewDueAt":"2026-12-14T00:00:00","templateVersion":"v2","aliases":["How do I set the 911 address on a VoIP phone?","How do I update my emergency address for VoIP?","What is a Registered Location for VoIP 911?","How do I register an emergency address in Microsoft Teams Phone?","How do I add a 911 address in Zoom Phone?","Do I have to register an address for VoIP 911 service?","How do I test my VoIP 911 address?","How do I change my 911 address when I move with a VoIP phone?","How does E911 registration work for a softphone?"],"confidenceScore":85,"confidenceLabel":"High","canonicalUrl":null},"contributor":{"id":"ec39deab-44fe-48d8-9029-fefe993ab85a","slug":"answer-stack","displayName":"AnswerStack","websiteUrl":null},"contributorOrganizationProfile":null,"contributorPerson":null,"sections":[{"id":"1951ae97-7d07-40d9-8623-e0646abff2a2","sectionKey":"what_a_registration_contains","sectionType":"markdown_section","heading":"What a 911 registration contains","introMarkdown":"A 911 registration is a location record attached to your service. The FCC's name for what that record should produce is dispatchable location. [The definition](https://www.law.cornell.edu/cfr/text/47/9.3) is the validated street address of the caller, plus additional information such as a suite or apartment needed to identify where the caller is.\n\nThe second half of that definition depends on the building. In a small single-story shop, the street address can be all responders need. In a ten-story office building, it isn't enough, and the floor or suite is the detail that gets responders to the right door.\n\nFor a service that can be used in more than one place, the rules also use the term Registered Location. It means the most recent information your provider has obtained that identifies your physical location. Under [the E911 rule for VoIP](https://www.law.cornell.edu/cfr/text/47/9.11), a provider that relies on a Registered Location has to obtain it from the customer before service starts. It also has to give you a way to update that location at will, and at least one update method must need only the equipment you already use for the service. The same rule sets which VoIP services must provide 911.\n\nA Registered Location isn't the starting point for every softphone. The rule first asks the provider of a movable service for automated location where that's technically feasible. The registered address is one of the alternatives when it isn't.","introHtml":"

A 911 registration is a location record attached to your service. The FCC's name for what that record should produce is dispatchable location. The definition is the validated street address of the caller, plus additional information such as a suite or apartment needed to identify where the caller is.

\n

The second half of that definition depends on the building. In a small single-story shop, the street address can be all responders need. In a ten-story office building, it isn't enough, and the floor or suite is the detail that gets responders to the right door.

\n

For a service that can be used in more than one place, the rules also use the term Registered Location. It means the most recent information your provider has obtained that identifies your physical location. Under the E911 rule for VoIP, a provider that relies on a Registered Location has to obtain it from the customer before service starts. It also has to give you a way to update that location at will, and at least one update method must need only the equipment you already use for the service. The same rule sets which VoIP services must provide 911.

\n

A Registered Location isn't the starting point for every softphone. The rule first asks the provider of a movable service for automated location where that's technically feasible. The registered address is one of the alternatives when it isn't.

\n","outroMarkdown":null,"outroHtml":null,"contentJson":{},"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":10},{"id":"cd9d1e30-5491-473e-956b-791c72a72c25","sectionKey":"phone_that_stays_put","sectionType":"markdown_section","heading":"Registering a phone that stays in one place","introMarkdown":"For a desk phone at one address, Atlantech Online's [static option](https://www.atlantech.net/blog/store-911-location-data-pidf-lo) puts the right address on the right phone number. You assign a specific address to each phone number in your account. Atlantech stores that address and sends it to the 911 call center, the [public safety answering point](https://www.answerstack.io/q/what-is-a-psap-public-safety-answering-point), when the number dials 911.\n\nThe rule puts delivery on the provider. A fixed VoIP service must provide automated dispatchable location with each 911 call. With the static option, though, what gets sent is the address you assigned, so the accuracy of the record is yours to check.\n\nAtlantech describes the static option as the simplest and most common one, and a good fit for a business in a fixed location. It also names two limits. The address has to be updated if a phone moves to a different location. And the static option doesn't support sub-address information such as a floor, suite or room number.\n\nTo correct an address, Atlantech's instruction is to open a support ticket, either by emailing support@atlantech.net or through [its care site](https://care.atlantech.net), with the relevant details.","introHtml":"

For a desk phone at one address, Atlantech Online's static option puts the right address on the right phone number. You assign a specific address to each phone number in your account. Atlantech stores that address and sends it to the 911 call center, the public safety answering point, when the number dials 911.

\n

The rule puts delivery on the provider. A fixed VoIP service must provide automated dispatchable location with each 911 call. With the static option, though, what gets sent is the address you assigned, so the accuracy of the record is yours to check.

\n

Atlantech describes the static option as the simplest and most common one, and a good fit for a business in a fixed location. It also names two limits. The address has to be updated if a phone moves to a different location. And the static option doesn't support sub-address information such as a floor, suite or room number.

\n

To correct an address, Atlantech's instruction is to open a support ticket, either by emailing support@atlantech.net or through its care site, with the relevant details.

\n","outroMarkdown":null,"outroHtml":null,"contentJson":{},"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":20},{"id":"1641f1d1-d0b7-422e-b5d3-5f75cfc23839","sectionKey":"phones_that_move_in_the_building","sectionType":"markdown_section","heading":"Registering phones that move around your building","introMarkdown":"Atlantech's second option ties the location to your network instead of to the phone number. It calls this the dynamic option, and it uses a format named PIDF-LO to carry location with the call.\n\nYou configure the location of each phone on your LAN switches and WiFi access points. A phone that dials 911 sends the location set on the switch or access point it's connected to. Move the phone from the second floor to the fifth, and the next call carries the fifth-floor location, provided the equipment there supports PIDF-LO and has that location configured. Atlantech says this option supports floor and suite detail, and that you no longer enter or update an address for each phone number.\n\nThe setup happens on your network, and Atlantech lists what it needs: equipment that supports PIDF-LO, correct configuration on that equipment, and a valid address for your network gateway. It also warns that a firewall or NAT device can block or alter the location headers. Atlantech offers to evaluate your network and guide the setup.\n\nMicrosoft Teams works on the same principle. [Its documentation](https://learn.microsoft.com/en-us/microsoftteams/configure-dynamic-emergency-calling) has an administrator load network identifiers into a location service and tie each one to an emergency location. The identifiers are subnets, WiFi access points, switches and ports. The Teams client then reports which one it's connected to.","introHtml":"

Atlantech's second option ties the location to your network instead of to the phone number. It calls this the dynamic option, and it uses a format named PIDF-LO to carry location with the call.

\n

You configure the location of each phone on your LAN switches and WiFi access points. A phone that dials 911 sends the location set on the switch or access point it's connected to. Move the phone from the second floor to the fifth, and the next call carries the fifth-floor location, provided the equipment there supports PIDF-LO and has that location configured. Atlantech says this option supports floor and suite detail, and that you no longer enter or update an address for each phone number.

\n

The setup happens on your network, and Atlantech lists what it needs: equipment that supports PIDF-LO, correct configuration on that equipment, and a valid address for your network gateway. It also warns that a firewall or NAT device can block or alter the location headers. Atlantech offers to evaluate your network and guide the setup.

\n

Microsoft Teams works on the same principle. Its documentation has an administrator load network identifiers into a location service and tie each one to an emergency location. The identifiers are subnets, WiFi access points, switches and ports. The Teams client then reports which one it's connected to.

\n","outroMarkdown":null,"outroHtml":null,"contentJson":{},"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":30},{"id":"78993066-de6f-4ca3-8a09-27fb70e0de92","sectionKey":"phones_away_from_the_office","sectionType":"markdown_section","heading":"Phones used away from the office","introMarkdown":"A softphone on a home network is the hard case, because your office switches and access points aren't there to report anything. The federal rule covers this with the alternatives described above. If automated location isn't technically feasible, the provider can rely on a Registered Location that you're able to update. A provider that does so must identify when a 911 call comes from somewhere other than the registered address. It then has to prompt you for a new location or update the record itself.\n\nAtlantech's [article on nomadic E911](https://www.atlantech.net/blog/nomadic-e911) describes location that comes from the configuration of a WiFi hotspot or a network switch. For an employee working from home, settle two things with Atlantech support before anyone relies on a softphone there: where the home address is recorded and how the employee changes it.","introHtml":"

A softphone on a home network is the hard case, because your office switches and access points aren't there to report anything. The federal rule covers this with the alternatives described above. If automated location isn't technically feasible, the provider can rely on a Registered Location that you're able to update. A provider that does so must identify when a 911 call comes from somewhere other than the registered address. It then has to prompt you for a new location or update the record itself.

\n

Atlantech's article on nomadic E911 describes location that comes from the configuration of a WiFi hotspot or a network switch. For an employee working from home, settle two things with Atlantech support before anyone relies on a softphone there: where the home address is recorded and how the employee changes it.

\n","outroMarkdown":null,"outroHtml":null,"contentJson":{},"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":40},{"id":"d175d015-543f-48ac-9987-087b2662c61a","sectionKey":"confirm_with_933","sectionType":"markdown_section","heading":"Confirming the registration","introMarkdown":"The last step is to hear the record read back. Atlantech documents [a 933 test](https://care.atlantech.net/kb/articles/testing-e911) for this. Dial 933 from the phone on Atlantech service, and a recorded message reads back your telephone number and then the E911 address set up for that phone. Some PBXs don't treat 933 as a valid number, so your PBX vendor may have to allow the call.\n\nSuppose your 15-person office moves from a building in Silver Spring to the fourth floor of a building in Rockville and keeps its phone numbers on the static option. Each number still carries the Silver Spring address until the record changes. You send Atlantech the new street address for those numbers through a support ticket. Once the change is made, you dial 933 from a desk phone and listen for your number and the Rockville address.\n\nThe fourth floor won't be in that record, because the static option doesn't hold floor detail. If responders would need the floor to find you, that's the reason to look at the dynamic option.\n\nThe readback confirms the address registered to the number you called from. It doesn't show how a live call would be routed. If your phones use switch and access point locations, ask Atlantech how to check them.\n\nAtlantech [recommends repeating the 933 check every year](https://www.atlantech.net/blog/e911-notification-feature). The same post describes a notification that emails one address of your choosing whenever someone dials 911 or 933, at no extra charge. You request it by emailing support with the address. With it turned on, check that inbox after your 933 call to confirm the alert arrived.","introHtml":"

The last step is to hear the record read back. Atlantech documents a 933 test for this. Dial 933 from the phone on Atlantech service, and a recorded message reads back your telephone number and then the E911 address set up for that phone. Some PBXs don't treat 933 as a valid number, so your PBX vendor may have to allow the call.

\n

Suppose your 15-person office moves from a building in Silver Spring to the fourth floor of a building in Rockville and keeps its phone numbers on the static option. Each number still carries the Silver Spring address until the record changes. You send Atlantech the new street address for those numbers through a support ticket. Once the change is made, you dial 933 from a desk phone and listen for your number and the Rockville address.

\n

The fourth floor won't be in that record, because the static option doesn't hold floor detail. If responders would need the floor to find you, that's the reason to look at the dynamic option.

\n

The readback confirms the address registered to the number you called from. It doesn't show how a live call would be routed. If your phones use switch and access point locations, ask Atlantech how to check them.

\n

Atlantech recommends repeating the 933 check every year. The same post describes a notification that emails one address of your choosing whenever someone dials 911 or 933, at no extra charge. You request it by emailing support with the address. With it turned on, check that inbox after your 933 call to confirm the alert arrived.

\n","outroMarkdown":null,"outroHtml":null,"contentJson":{},"configJson":{},"noteMarkdown":null,"noteHtml":null,"sortOrder":50}],"citations":[{"title":"47 CFR 9.11: E911 service requirements for interconnected VoIP","url":"https://www.law.cornell.edu/cfr/text/47/9.11","excerpt":"Providers of fixed interconnected VoIP services must provide automated dispatchable location with each 911 call... The service provider has provided end users one or more methods of updating their Registered Location, including at least one option that requires use only of the CPE necessary to access the interconnected VoIP service. Any method used must allow an end user to update the Registered Location at will and in a timely manner.","quoteText":null,"sourceRole":"INDEPENDENT","verifiedAt":"2026-09-14T00:00:00","supportsText":"Fixed interconnected VoIP providers must provide automated dispatchable location with each 911 call; non-fixed providers must provide automated dispatchable location if technically feasible, otherwise Registered Location obtained from the customer prior to initiation of service, alternative location","domain":"law.cornell.edu","publisherName":"Legal Information Institute, Cornell Law School"},{"title":"47 CFR 9.3, Definitions: Interconnected VoIP service","url":"https://www.law.cornell.edu/cfr/text/47/9.3","excerpt":"Dispatchable location. A location delivered to the PSAP with a 911 call that consists of the validated street address of the calling party, plus additional information such as suite, apartment or similar information necessary to adequately identify the location of the calling party.","quoteText":null,"sourceRole":"INDEPENDENT","verifiedAt":"2026-09-14T00:00:00","supportsText":"Definitions of dispatchable location (validated street address plus suite, apartment or similar information), Registered Location (the most recent information obtained by a provider identifying the physical location of an end user), alternative location information (civic address plus approximate in","domain":"law.cornell.edu","publisherName":"Legal Information Institute, Cornell Law School"},{"title":"47 CFR § 9.16: General obligations for direct 911 dialing, notification, and dispatchable location","url":"https://www.law.cornell.edu/cfr/text/47/9.16","excerpt":"An on-premises fixed telephone associated with a multi-line telephone system shall provide automated dispatchable location no later than January 6, 2021... No later than January 6, 2022, an off-premises device associated with a multi-line telephone system shall provide to the appropriate PSAP automatic dispatchable location, if technically feasible.","quoteText":null,"sourceRole":"INDEPENDENT","verifiedAt":"2026-09-14T00:00:00","supportsText":"MLTS installers, managers and operators must configure direct 911 dialing from any station equipped with dialing facilities without a prefix or trunk-access digit; must configure MLTS notification where possible without a hardware or software improvement, initiated contemporaneously, not delaying th","domain":"law.cornell.edu","publisherName":"Legal Information Institute, Cornell Law School"},{"title":"FCC Announces Compliance Dates for New E911 Rules Applicable to Multi-Line Telephone Systems and VoIP Providers","url":"https://www.wiley.law/alert-FCC-Announces-Compliance-Dates-for-New-E911-Rules-Applicable-to-Multi-Line-Telephone-Systems-and-VoIP-Providers","excerpt":"These deadlines apply to MLTS installed after February 16, 2020... For fixed interconnected VoIP services, providers must supply automated dispatchable location with each 911 call starting January 6, 2021.","quoteText":null,"sourceRole":"INDEPENDENT","verifiedAt":"2026-09-14T00:00:00","supportsText":"Independent corroboration of the January 6, 2021 and January 6, 2022 dispatchable location compliance dates, and the scope limit that these deadlines apply to MLTS installed after February 16, 2020, with the Kari's Law direct dialing and notification rules applying to MLTS manufactured, imported, of","domain":"wiley.law","publisherName":"Wiley Rein LLP"},{"title":"Plan and manage emergency calling - Microsoft Teams","url":"https://learn.microsoft.com/en-us/microsoftteams/what-are-emergency-locations-addresses-and-call-routing","excerpt":"To assign an emergency address to a user or to a network identifier, you must ensure that the emergency address is marked as “validated.”","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation for Teams Phone: emergency address, place, emergency location and registered address definitions; a location ID generated per address and a second for the address plus place; the requirement that an address be marked validated before assignment to a user or network identifier; m","domain":"learn.microsoft.com","publisherName":"Microsoft Learn"},{"title":"Emergency addresses for remote locations","url":"https://learn.microsoft.com/en-us/microsoftteams/emergency-calling-dispatchable-location","excerpt":"A confirmed, edited, or manually entered address is then saved on the Teams client so that the user-confirmed address is automatically used when the client is connected to that network. The user-saved addresses are automatically cleared when the Teams client is signed out.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation for the Teams work-from-home flow: the OS location service suggests an address the user confirms, edits or replaces; the confirmed address is saved on the client per network and is cleared automatically on sign-out; the routing table showing which address types go direct to the ","domain":"learn.microsoft.com","publisherName":"Microsoft Learn"},{"title":"Configure dynamic emergency calling","url":"https://learn.microsoft.com/en-us/microsoftteams/configure-dynamic-emergency-calling","excerpt":"Calling Plan, Operator Connect, and Teams Phone Mobile users in the United States or Canada can use the predefined test emergency number 933 to validate their emergency calling configuration... Direct Routing customers in the United States should coordinate with their ERSP for a test service.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation: Location Information Service match order (WAP, Ethernet switch/port, Ethernet switch, subnet, first match used); switch and WAP requests made regardless of trusted IP match; network configuration lookups unsupported with cloud proxy deployments that modify source IP; emergency ","domain":"learn.microsoft.com","publisherName":"Microsoft Learn"},{"title":"Network settings for cloud voice features","url":"https://learn.microsoft.com/en-us/microsoftteams/cloud-voice-network-settings","excerpt":"If the user's external IP address doesn't match an IP address that's in the trusted IP address list, the endpoint is classified as being at an unknown location.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation: trusted IP addresses are the external internet IP addresses of the enterprise network and determine whether an endpoint is inside the corporate network; an endpoint whose external IP does not match the trusted IP list is classified as being at an unknown location.","domain":"learn.microsoft.com","publisherName":"Microsoft Learn (vendor product documentation)"},{"title":"Setting up nomadic emergency services","url":"https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0062169","excerpt":"The Zoom Workplace app will prompt phone users when they're in an undefined location and notify them that they're using a default address.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation for Zoom Phone: company locations under a site with sub-locations for floors and suites; IPv4 and IPv6 ranges and BSSID attachable to a location; detection order of network switch MAC address and port, then BSSID, then public and private IP or subnet, then public IP; personal lo","domain":"support.zoom.com","publisherName":"Zoom Support"},{"title":"Setting up Nomadic 911 on your company account","url":"https://support.ringcentral.com/article-v2/Nomadic-911-Automatic-Location-Updates-Overview.html?brand=RC_US&product=RingEX&language=en_US","excerpt":"Contact your RingCentral account manager to enable your account's Automatic Location Updates feature.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation for RingCentral: company emergency response locations mapped to wireless access point BSSIDs, public and private IP addresses, and Ethernet switch chassis ID and port; admins and users can select a company ERL when prompted to confirm location; the Automatic Location Updates fea","domain":"support.ringcentral.com","publisherName":"RingCentral Support"},{"title":"Vonage Business Cloud: Manage Emergency Services","url":"https://businesssupport.vonage.com/articles/answer/Emergency-Services-US","excerpt":"If not verified, emergency calls route to the National Emergency Call Center (NECC), where you must supply your address to an agent before the call is routed to the closest PSAP... Validation can take up to 30 days to complete.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation for Vonage Business Cloud: Admin Portal workflow under Account then Emergency Services Management for adding locations and assigning devices; Super User or administrators manage locations while all users can verify their own location status; addresses verified against the Master","domain":"businesssupport.vonage.com","publisherName":"Vonage Business Support"},{"title":"8x8 Admin Console: Set up emergency address for users","url":"https://docs.8x8.com/8x8WebHelp/admin-console/Content/Set_up_Emergency_Address.htm","excerpt":"You can override an existing address, but it might not be registered for Emergency Services if it's not validated.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation for 8x8: emergency address set per user under Home then Users, defaulting to the site address; a new user whose site address cannot be validated cannot be saved until the site address is corrected; where a manually entered address fails validation the admin may click Use existin","domain":"docs.8x8.com","publisherName":"8x8 Documentation"},{"title":"How do I test E911 service?","url":"https://support.telnyx.com/en/articles/1130709-how-do-i-test-e911-service","excerpt":"A successful 933 test confirms the address associated with the test call. It does not dispatch emergency services... If you use a PBX, SBC, UCaaS platform, or Microsoft Teams Direct Routing, make sure 933 is not being routed to another provider or blocked by your platform.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation: 933 is the routine test path for E911 validation in the United States and Canada; a successful 933 test confirms the address associated with the test call and does not dispatch emergency services; live 911 calls should not be placed for routine testing; behind a PBX, SBC, UCaaS","domain":"support.telnyx.com","publisherName":"Telnyx Support"},{"title":"911 Services and Ooma Features","url":"https://www.ooma.com/home-phone-service/resources/get-started/911-services/","excerpt":"Ooma cannot provide 911 service without both power and a working broadband Internet connection... Calls to 911 with the Ooma Home Phone app on your cell phone will not work.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor documentation for a consumer VoIP adapter: the 911 service address is set in My Ooma under Account then Service Address; Ooma cannot provide 911 service without both power and a working broadband internet connection; calls to 911 from the Ooma Home Phone mobile app do not work.","domain":"ooma.com","publisherName":"Ooma (vendor product documentation)"},{"title":"Ooma Legal: E911 Terms and Disclosures","url":"https://www.ooma.com/legal/e-911-terms-and-disclosures/","excerpt":"For purposes of 911 Dialing, you may only register one location at a time for each piece of Equipment... Emergency dialing will not function during a broadband, power, or ISP Service disruption.","quoteText":null,"sourceRole":"PRIMARY","verifiedAt":"2026-09-14T00:00:00","supportsText":"Vendor terms: only one location at a time may be registered for each piece of equipment; the customer must ensure the physical locations provided are correct and immediately update them when device locations change; emergency dialing will not function during a broadband, power, or ISP service disrup","domain":"ooma.com","publisherName":"Ooma (vendor terms of service)"},{"title":"Potential Impacts on Telephone Service during De-Energization","url":"https://www.cpuc.ca.gov/consumer-support/psps/potential-impacts-on-telephone-service-during-de-energization","excerpt":"If you are a VoIP customer, service during a power outage depends on the provider's underlying facility... It is your responsibility to get the needed backup power in your home to have working telephone service during an outage event... Rule 3 does not require carriers to provide access to 9-1-1 during a power outage or de-energization event.","quoteText":null,"sourceRole":"INDEPENDENT","verifiedAt":"2026-09-14T00:00:00","supportsText":"VoIP service during a power outage depends on the provider's underlying facility; the CPUC has no rules mandating backup power for VoIP; getting the needed backup power in the home is the customer's responsibility; General Order 168 Rule 3 requires providers to give residential customers access to 9","domain":"cpuc.ca.gov","publisherName":"California Public Utilities Commission"},{"title":"RFC 4119: A Presence-based GEOPRIV Location Object Format","url":"https://www.rfc-editor.org/rfc/rfc4119.txt","excerpt":"This document describes an object format for carrying geographical information on the Internet. This location object extends the Presence Information Data Format (PIDF).","quoteText":null,"sourceRole":"INDEPENDENT","verifiedAt":"2026-09-14T00:00:00","supportsText":"PIDF-LO is the standards-track object format for carrying geographical information on the internet, extending the Presence Information Data Format; this is the format Teams Direct Routing signals when PidfloSupported is enabled.","domain":"rfc-editor.org","publisherName":"IETF (standards track specification)"}],"revisions":[{"revisedAt":"2026-07-20T16:31:58.611+00:00","versionLabel":"Originally published","note":"","reviewedBy":null}],"relatedAnswers":[{"id":"d646fe66-5b68-41ac-9f7a-3a885825df52","slug":"what-is-next-generation-911-ng911-and-how-is-it-different-from-e911","question":"What is Next Generation 911 (NG911), and how is it different from E911?","publishedAt":"2026-06-17T16:31:53.296","confidenceScore":92,"confidenceLabel":"High","industry":{"id":"ff619d7c-d7d7-485e-a05a-53fba07f33ed","slug":"telecommunications","label":"Telecommunications","description":"Business voice, fiber, UCaaS, and network services"},"topic":{"slug":"emergency-calling","label":"Emergency Calling","description":"911, E911, and NG911 for VoIP and SIP: registration, location accuracy, and call routing.","schemaKind":null},"contributor":{"id":"ec39deab-44fe-48d8-9029-fefe993ab85a","slug":"answer-stack","displayName":"AnswerStack","websiteUrl":null},"snippet":"NG911 is an IP-based system for receiving, routing and delivering 911 calls. It replaces the circuit-switched network behind legacy E911, which delivers a voice call with the caller's number and location. The functions carry over and the architecture changes: NG911 routes on a location carried inside the call. Each 911 authority moves to it when its own network is ready.","url":"/q/what-is-next-generation-911-ng911-and-how-is-it-different-from-e911"},{"id":"eec6f088-b596-4007-a107-81939f09ee74","slug":"what-is-a-psap-public-safety-answering-point","question":"What is a PSAP (Public Safety Answering Point)?","publishedAt":"2026-05-12T16:31:56.115","confidenceScore":93,"confidenceLabel":"High","industry":{"id":"ff619d7c-d7d7-485e-a05a-53fba07f33ed","slug":"telecommunications","label":"Telecommunications","description":"Business voice, fiber, UCaaS, and network services"},"topic":{"slug":"emergency-calling","label":"Emergency Calling","description":"911, E911, and NG911 for VoIP and SIP: registration, location accuracy, and call routing.","schemaKind":null},"contributor":{"id":"ec39deab-44fe-48d8-9029-fefe993ab85a","slug":"answer-stack","displayName":"AnswerStack","websiteUrl":null},"snippet":"A public safety answering point, or PSAP, is the 911 center designated to receive emergency calls and route them to emergency services personnel. A primary PSAP gets the call first, and a secondary PSAP takes calls transferred from a primary. The caller's location decides which PSAP a call reaches, which is why the address a VoIP provider holds for a phone matters at the PSAP's end.","url":"/q/what-is-a-psap-public-safety-answering-point"},{"id":"dc46b870-84ce-4ca3-97d2-5d91dd4818de","slug":"what-is-enhanced-911-e911","question":"What is Enhanced 911 (E911)?","publishedAt":"2026-04-16T16:31:50.28","confidenceScore":90,"confidenceLabel":"High","industry":{"id":"ff619d7c-d7d7-485e-a05a-53fba07f33ed","slug":"telecommunications","label":"Telecommunications","description":"Business voice, fiber, UCaaS, and network services"},"topic":{"slug":"emergency-calling","label":"Emergency Calling","description":"911, E911, and NG911 for VoIP and SIP: registration, location accuracy, and call routing.","schemaKind":null},"contributor":{"id":"ec39deab-44fe-48d8-9029-fefe993ab85a","slug":"answer-stack","displayName":"AnswerStack","websiteUrl":null},"snippet":"E911 sends the caller's phone number and location to the 911 center with the call. For business phone systems the standard is a dispatchable location, which the business records for each device, keeps current and tests.","url":"/q/what-is-enhanced-911-e911"}],"contributorStats":{"verifiedAnswers":149,"openDisputes":0},"schemaJson":{"@context":"https://schema.org","@type":"Question","name":"How do I register a VoIP phone for 911?","text":"How do I register a VoIP phone for 911?","url":"https://www.answerstack.io/q/how-do-i-register-a-voip-phone-for-911","answerCount":1,"datePublished":"2026-07-20T16:31:58.611","about":[{"@type":"Thing","name":"Emergency Calling"},{"@type":"Thing","name":"Telecommunications"}],"acceptedAnswer":{"@type":"Answer","text":"You register a VoIP phone for 911 by giving your provider the street address where the phone is used, plus the suite or floor if responders would need it. The provider ties that location to the phone. Providers collect this as part of setting up service. After that, your job is to change it when the phone moves and to confirm what's on file. The exact steps differ by provider, and Atlantech Online's documentation for its phone service shows what they look like in practice.","url":"https://www.answerstack.io/q/how-do-i-register-a-voip-phone-for-911","upvoteCount":0,"datePublished":"2026-07-20T16:31:58.611","dateModified":"2026-09-14T00:00:00","citation":[{"@type":"CreativeWork","name":"47 CFR 9.11: E911 service requirements for interconnected VoIP","url":"https://www.law.cornell.edu/cfr/text/47/9.11"},{"@type":"CreativeWork","name":"47 CFR 9.3, Definitions: Interconnected VoIP service","url":"https://www.law.cornell.edu/cfr/text/47/9.3"},{"@type":"CreativeWork","name":"47 CFR § 9.16: General obligations for direct 911 dialing, notification, and dispatchable location","url":"https://www.law.cornell.edu/cfr/text/47/9.16"},{"@type":"CreativeWork","name":"FCC Announces Compliance Dates for New E911 Rules Applicable to Multi-Line Telephone Systems and VoIP Providers","url":"https://www.wiley.law/alert-FCC-Announces-Compliance-Dates-for-New-E911-Rules-Applicable-to-Multi-Line-Telephone-Systems-and-VoIP-Providers"},{"@type":"CreativeWork","name":"Plan and manage emergency calling - Microsoft Teams","url":"https://learn.microsoft.com/en-us/microsoftteams/what-are-emergency-locations-addresses-and-call-routing"},{"@type":"CreativeWork","name":"Emergency addresses for remote locations","url":"https://learn.microsoft.com/en-us/microsoftteams/emergency-calling-dispatchable-location"},{"@type":"CreativeWork","name":"Configure dynamic emergency calling","url":"https://learn.microsoft.com/en-us/microsoftteams/configure-dynamic-emergency-calling"},{"@type":"CreativeWork","name":"Network settings for cloud voice features","url":"https://learn.microsoft.com/en-us/microsoftteams/cloud-voice-network-settings"},{"@type":"CreativeWork","name":"Setting up nomadic emergency services","url":"https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0062169"},{"@type":"CreativeWork","name":"Setting up Nomadic 911 on your company account","url":"https://support.ringcentral.com/article-v2/Nomadic-911-Automatic-Location-Updates-Overview.html?brand=RC_US&product=RingEX&language=en_US"},{"@type":"CreativeWork","name":"Vonage Business Cloud: Manage Emergency Services","url":"https://businesssupport.vonage.com/articles/answer/Emergency-Services-US"},{"@type":"CreativeWork","name":"8x8 Admin Console: Set up emergency address for users","url":"https://docs.8x8.com/8x8WebHelp/admin-console/Content/Set_up_Emergency_Address.htm"},{"@type":"CreativeWork","name":"How do I test E911 service?","url":"https://support.telnyx.com/en/articles/1130709-how-do-i-test-e911-service"},{"@type":"CreativeWork","name":"911 Services and Ooma Features","url":"https://www.ooma.com/home-phone-service/resources/get-started/911-services/"},{"@type":"CreativeWork","name":"Ooma Legal: E911 Terms and Disclosures","url":"https://www.ooma.com/legal/e-911-terms-and-disclosures/"},{"@type":"CreativeWork","name":"Potential Impacts on Telephone Service during De-Energization","url":"https://www.cpuc.ca.gov/consumer-support/psps/potential-impacts-on-telephone-service-during-de-energization"},{"@type":"CreativeWork","name":"RFC 4119: A Presence-based GEOPRIV Location Object Format","url":"https://www.rfc-editor.org/rfc/rfc4119.txt"}]}}}