---
page_type: error
code: 32220
message: "32220: Specifying an edge is not allowed when dialing SIP registered endpoints"
level: ERROR
product: Programmable Voice
---

## Description

Twilio SIP domains allow endpoints to register through any supported SIP edge location. When dialing a registered endpoint, Twilio will fork the call to _all_ SIP devices registered under the same username/domain. Dialing one of your SIP domain's localized URIs (such as yourdomain.sip.ashburn.twilio.com) is not supported.

### Possible Causes

- Attempting to place a call to username@yourdomain.sip._ashburn_.twilio.com, or any other edge variant (e.g. ashburn-ix, umatilla, sydney, etc.)
- Note that existing registration customers dialing yourdomain.sip.us1.twilio.com or yourdomain.sip.us1-ix.twilio.com _are_ allowed (although this behavior is deprecated).

### Possible Solutions

- Dial the global URI for your SIP domain, e.g. username@yourdomain.sip.twilio.com.