- [Support](https://www.t-mobile.com/support) - [Get started](#) - [New to T-Mobile?](https://www.t-mobile.com/support/new-to-tmobile) [Switching is easy](https://www.t-mobile.com/support/new-to-tmobile/family-freedom) [Set up your device](https://www.t-mobile.com/support/new-to-tmobile/device) [Using the app](https://www.t-mobile.com/support/plans-features/t-mobile-app) [All get started topics](https://www.t-mobile.com/support/new-to-tmobile) - [Account resources](#) - [Ways to pay your bill](https://www.t-mobile.com/support/account/pay-your-bill) [All about your bill](https://www.t-mobile.com/support/account/whats-impacting-your-bill) [Line permissions](https://www.t-mobile.com/support/account/set-online-permissions) [Your T-Mobile ID](https://www.t-mobile.com/support/account/set-up-and-manage-your-t-mobile-id) [Your PIN/Passcode](https://www.t-mobile.com/support/account/update-your-customer-pinpasscode) [All account resources topics](https://www.t-mobile.com/support/account) - [Network & roaming](#) - [T-Mobile network](https://www.t-mobile.com/support/coverage/t-mobile-network) [In-flight texting and Wi-Fi](https://www.t-mobile.com/support/coverage/t-mobile-in-flight-texting-and-wi-fi) [Wi-Fi Calling](https://www.t-mobile.com/support/coverage/wi-fi-calling-from-t-mobile) [International roaming](https://www.t-mobile.com/support/coverage/international-roaming-services) [Mobile Without Borders](https://www.t-mobile.com/support/coverage/mobile-without-borders) [All network & roaming topics](https://www.t-mobile.com/support/coverage) - [Plans support](#) - [Find the right plan](https://www.t-mobile.com/support/plans-features/find-the-right-plan-for-you) [Netflix on Us](https://www.t-mobile.com/support/plans-features/netflix-on-us) [HotSpot plans](https://www.t-mobile.com/support/plans-features/mobile-internet-plans-for-hotspots) [Voicemail](https://www.t-mobile.com/support/plans-features/voicemail) [Use Mobile HotSpot](https://www.t-mobile.com/support/plans-features/smartphone-mobile-hotspot-wi-fi-sharing--tethering) [All plans support topics](https://www.t-mobile.com/support/plans-features) - 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[Get started](#) - [New to T-Mobile?](https://www.t-mobile.com/support/new-to-tmobile) - [Switching is easy](https://www.t-mobile.com/support/new-to-tmobile/family-freedom) - [Set up your device](https://www.t-mobile.com/support/new-to-tmobile/device) - [Using the app](https://www.t-mobile.com/support/plans-features/t-mobile-app) - [All get started topics](https://www.t-mobile.com/support/new-to-tmobile) - [Account resources](#) - [Ways to pay your bill](https://www.t-mobile.com/support/account/pay-your-bill) - [All about your bill](https://www.t-mobile.com/support/account/whats-impacting-your-bill) - [Line permissions](https://www.t-mobile.com/support/account/set-online-permissions) - [Your T-Mobile ID](https://www.t-mobile.com/support/account/set-up-and-manage-your-t-mobile-id) - [Your PIN/Passcode](https://www.t-mobile.com/support/account/update-your-customer-pinpasscode) - [All account resources topics](https://www.t-mobile.com/support/account) - [Network & roaming](#) - [T-Mobile network](https://www.t-mobile.com/support/coverage/t-mobile-network) - [In-flight texting and Wi-Fi](https://www.t-mobile.com/support/coverage/t-mobile-in-flight-texting-and-wi-fi) - [Wi-Fi Calling](https://www.t-mobile.com/support/coverage/wi-fi-calling-from-t-mobile) - [International roaming](https://www.t-mobile.com/support/coverage/international-roaming-services) - [Mobile Without Borders](https://www.t-mobile.com/support/coverage/mobile-without-borders) - [All network & roaming topics](https://www.t-mobile.com/support/coverage) - [Plans support](#) - [Find the right plan](https://www.t-mobile.com/support/plans-features/find-the-right-plan-for-you) - [Netflix on Us](https://www.t-mobile.com/support/plans-features/netflix-on-us) - [HotSpot plans](https://www.t-mobile.com/support/plans-features/mobile-internet-plans-for-hotspots) - [Voicemail](https://www.t-mobile.com/support/plans-features/voicemail) - [Use Mobile HotSpot](https://www.t-mobile.com/support/plans-features/smartphone-mobile-hotspot-wi-fi-sharing--tethering) - [All plans support topics](https://www.t-mobile.com/support/plans-features) - [Device assistance](#) - [Tutorials](https://www.t-mobile.com/support/tutorials) - [Troubleshooting](https://www.t-mobile.com/support/phones-tablets-devices/troubleshooting) - [Unlock your device](https://www.t-mobile.com/support/devices/unlock-your-mobile-wireless-device) - [Protect your device](https://www.t-mobile.com/support/devices/protectionandlt360andgt-and-device-protection) - [SIM card & eSIM](https://www.t-mobile.com/support/devices/sim-esim) - [All device assistance topics](https://www.t-mobile.com/support/phones-tablets-devices) - [Business support](#) - [Get T-Mobile for Business](https://www.t-mobile.com/support/business/new-to-business) - [Billing and payments](https://www.t-mobile.com/support/business/billing) - [Manage your account](https://www.t-mobile.com/support/business/account) - [Orders and shopping](https://www.t-mobile.com/support/business/orders-shopping) - [Account Hub registration](https://www.t-mobile.com/support/business/account-hub-registration) - [All business support topics](https://www.t-mobile.com/support/business) [Support](https://www.t-mobile.com/support/) [Coverage](https://www.t-mobile.com/support/coverage) # Wi-Fi Calling on a corporate network 0 Added! [](https://www.t-mobile.com) ### Manage Links Click any [available links](https://www.t-mobile.com) to add. Click any [added links](https://www.t-mobile.com) to remove. Links with [no highlight](https://www.t-mobile.com) can't be sent. Done (0 Links) Find the technical details to set up a corporate environment for T-Mobile Wi-Fi Calling​. ## On this page: - [Setup](https://www.t-mobile.com#firstheading) - [Security](https://www.t-mobile.com#secondheading) - [EAP](https://www.t-mobile.com#thirdheading) - [Firewalls](https://www.t-mobile.com#fourthheading)   ## [](https://www.t-mobile.com)Setup In a multipurpose network setting, we recommend setting up a specific SSID (secure network) to exclusively segment traffic for Wi-Fi calling.   ## [](https://www.t-mobile.com)Security Even though voice over Wi-Fi does not require a specific security mechanism or authentication to be put in place in order to work, we recommendation securing the wireless local area network (WLAN) that will be used to carry Wi-Fi calling. T-Mobile devices support the WLAN security techniques used in corporate environments for authentication and encryption, such as: - WPA (TKIP) - Personal and Enterprise - WPA2 (AES-CCMP) - Personal and Enterprise - LEAP: TKIP, Dynamic WEP, AES. (No LEAP-CKIP) - PEAP - EAP-TLS, EAP-TTLS, EAP-FAST, EAP-SIM, and EAP-AKA - Virtual private network (VPN) access security - Media Access Control (MAC) lists - Service-specific access security - Captive portal   ## [](https://www.t-mobile.com)EAP EAP-FAST (if available) is the recommended EAP type for use of VoWLAN deployments.   ## [](https://www.t-mobile.com)Firewalls IPv4 Address Block: 208.54.0.0/16: | Port &TCP/UDP | Description | |----------------------|-------------------------------------------------------------| | Port: 500 / UDP | IPsec - IKE : Authentication \[WFC 2.0] | | Port: 4500 / UDP | IPsec - NAT traversal : Encrypted voice traffic \[WFC  2.0] | | Port: 5061 / TCP/UDP | SIP/TLS : Encrypted SIP \[WFC 1.0] | Port & TCP/UDP and their descriptions   IPv4 Address Block: 66.94.0.0/19: | Port &TCP/UDP | Description | |-----------------|----------------------------------------------------| | Port: 443 / TCP | HTTPS : Used for handset authentication \[WFC 1.0] | | Port: 993 / TCP | IMAP/SSL : Visual Voicemail \[WFC 1.0] | Port & TCP/UDP and their descriptions Also allowlist the CRL server for DIGITS OTT and WFC 1.0: crl.t-mobile.com 206.29.177.36 * * * Was this helpful? * * * ## Can't find what you're looking for? - [Contact Us](https://www.t-mobile.com/contact-us) - [Ask our community](https://www.t-mobile.com/community/)