Have issue with telynx and livekit integration. Tw...
# ask-aib
billions-book-73023
07/30/2025, 3:41 PMHave issue with telynx and livekit integration. Twilio works but telynx gets busy signal 486. Any tips?
t
tall-airline-16756
07/30/2025, 3:44 PMThanks for reaching out, Anand. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
tall-airline-16756
07/30/2025, 3:44 PMCould you provide more details about your Telnyx and LiveKit integration setup? Specifically:
• Are you using SIP trunks or another method for the integration?
• Have you configured any specific settings for Telnyx, such as codecs or SIP headers?
• Does the issue occur for all calls or only specific scenarios?
This information will help in identifying the cause of the 486 busy signal.
Sources: protobufs/livekit_models.proto
b
billions-book-73023
07/30/2025, 3:48 PM# SIP Trunk (same as working Twilio setup)
ST_nbvXD7AUKpst | telnyx-completely-open | +19176941xxx | (no IP restrictions)
# Dispatch Rule
SDR_yj7K7BQC9pwu | simple-dispatch | <any> | restaurant-agent
# Agent Registration Log
2025-07-29 205149,108 - INFO livekit.agents - registered worker
{"id": "AW_ngZNNBkSivHw", "url": "wss://restaurant-pf-nx1t2hwj.livekit.cloud", "region": "US East B"}
[9:15 PM]
Telynx Config: {
"connection_id": "2750544190722016270",
"dnis_number_format": "+e164",
"ani_number_format": "E.164-national",
"fqdn": "17ixm51ci80.sip.livekit.cloud:5060"
}
[9:15 PM]
call flow debug:
1. INVITE sip:+19176941266;npdi;rn=+15168940999@64.16 (from 152.189.4.187)
2. 100 Trying SIP/2.0 100 Telnyx Trying
3. 486 Busy SIP/2.0 486 Busy Here D61 Via: SIP/2.0/UDP 152.18
4. ACK (properly acknowledged)
t
tall-airline-16756
07/30/2025, 3:49 PMI don't have the answer you're looking for.
You could also try asking your question:
• in one of the other Slack channels
or
• to https://deepwiki.com/livekit/livekit_composite which is trained on all LiveKit source code
If you find the answer, please post it here to help others!