# 32221: Dialing SIP Endpoint failure - No devices registered in specified edge

Log Type: APPLICATION

Log Level: ERROR

## Description

This error occurs when you dial a registered SIP endpoint by using an edge-specific SIP URI, but no device for that address of record is currently registered through that edge. When you call a registered SIP endpoint, use your SIP domain's global URI in the format `username@yourdomain.sip.twilio.com` unless you intentionally rely on legacy `us1` or `us1-ix` behavior.

### Possible causes

* Your application is dialing an edge-specific or legacy regional URI such as `username@yourdomain.sip.us1.twilio.com`, but the endpoint is registered through a different edge.
* Your SIP devices are registering through an unexpected edge because the Registration Domain or Outbound Proxy is configured incorrectly.
* You are migrating from legacy `us1` or `us1-ix` registration and some devices now register through other edge locations while your application still dials an edge-specific URI.
* The endpoint is registered, but only on other edge locations and not on the edge you specified in the URI.

### Possible solutions

* Update your TwiML or REST API request to dial the global SIP domain URI, such as `username@yourdomain.sip.twilio.com`.
* If your SIP client supports separate settings, set the Registration Domain to `yourdomain.sip.twilio.com` and set the Outbound Proxy to the edge closest to the device, such as `sip.sydney.twilio.com`.
* If you want to keep using legacy `us1` or `us1-ix` dialing behavior, make sure the device is actually registered through the Ashburn edge that matches that URI.
* Review the Registered SIP Endpoints tab on your SIP Domain and confirm which edge each device is using.
* Reconfigure devices that are registering through the wrong edge, or disable SIP Registration on devices that should not register.

#### Additional resources

* [SIP Registration](/docs/voice/api/sip-registration)
* [Receiving SIP from Twilio](/docs/voice/api/receiving-sip)
* [SIP URIs](/docs/global-infrastructure/localized-uris/sip-uris)