jonblaze#1564
03/31/2026, 11:28 PMAI Evy
03/31/2026, 11:28 PMAI Evy
03/31/2026, 11:28 PMAI Evy
03/31/2026, 11:28 PMsip:sip.retellai.com
2. Move your Twilio number to the Elastic SIP Trunk
3. Import the number to Retell [(2) ]() [(3) ]()
- Go to Phone Numbers → "Connect via SIP Trunking" [(1) ]()
- Enter your Twilio number, Termination SIP URI, and SIP credentials (if using them)
- You can also import programmatically via the Import Number API [(2) ]()
Regarding the "phone number already exists" issue:
When a phone number shows as "already exists" but isn't visible in your workspace, the Retell team can help resolve this [(4) ]() . For proof of ownership, a screenshot from your Twilio console showing the phone number with the Phone Number SID is acceptable . You'll also need to provide your Organization ID (org_sbW3pHyOtv6QXgsG) .
The recommended channel for this type of support request is Discord, where the Retell team can directly assiAI Evy
03/31/2026, 11:28 PMAI Evy
03/31/2026, 11:28 PMjonblaze#1564
03/31/2026, 11:44 PMjonblaze#1564
03/31/2026, 11:44 PMAI Evy
03/31/2026, 11:44 PMAI Evy
03/31/2026, 11:45 PMAI Evy
03/31/2026, 11:45 PMAI Evy
03/31/2026, 11:45 PM