is possible set another location for better latency with custom telpehny ou... Retell AI #❓・ai-evy-support

is possible set another location for better latenc...

luiseteskill

01/08/2026, 2:33 PM

@AI Evy is possible set another location for better latency with custom telpehny outside US? in europe? your ips sip.retell.com are from US with 200ms of latency.

AI Evy

01/08/2026, 2:34 PM

Thanks for tagging me @luiseteskill. I'll look through relevant sources and get back to you shortly.

AI Evy

01/08/2026, 2:34 PM

### Answer Based on the available documentation, Retell AI currently provides a single SIP server URI for custom telephony: - SIP server URI:

sip:sip.retellai.com

[(1) ]() - IP blocks for traffic:

18.98.16.120/30

(All regions) ,

143.223.88.0/21

(United States only) ,

161.115.160.0/19

(United States only) The documentation notes that "Some non US traffic might go from IPs not listed above, but will be migrated to the first IP block by 12/03/2025." Unfortunately, I don't see any documentation about alternative regional SIP endpoints specifically for Europe or other regions to reduce latency. The available sources only reference the single

sip.retellai.com

endpoint. For your situation, you might want to: 1. Check out Retell's partner [Jambonz]() , which is mentioned as an option for users who need specific regional or connectivity requirements 2. Contact Retell directly to inquire about regional SIP server options Check out these potentially useful sources: - [Custom Telephony Overview]() - [Contact Sales]() Would you like me to provide a general answer about SIP latency optimization strategies?

AI Evy

01/08/2026, 2:34 PM

To learn more, see the sources I considered: [[1] Custom Telephony Overview](https://docs.retellai.com/deploy/custom-telephony)

AI Evy

01/08/2026, 2:34 PM

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

Previous Next