I'm setting up outbound calls for an Australian client. We have no issues with current setup when using USA - USA calls using imported Telnyx numbers. As soon as we switch to AU mobile-AU mobile calls, there is a massive lag the end user faces (reported as 5 seconds when setting Anchor site to Sydney, 10 seconds when anchor is set as Latency on the Telnyx SIP configuration). Call recordings on Vapi do not reflect reality as calls are going through Telnyx, which is a problem to trouble shoot. Vapi recordings suggest AI responds quickly but reality is the end user faces a huge lag ( tested on multiple different users with same feedback). Has anyone come across this issue before when using Telnyx numbers with Vapi in Australia? Again, we have super fast response times with same setup when doing USA-USA calls.

Suggestion: Try explicitly setting the SIP trunk's outbound voice profile in Telnyx to prioritize Australian routes and ensure your SIP trunk configuration in Vapi uses the correct gateway for Australia. For example, in your Telnyx SIP trunk settings, assign an outbound voice profile optimized for AU and confirm your Vapi SIP trunk uses:

json
"gateways": [
  { "ip": "sip.telnyx.com" }
]

After updating, test call latency again. This can help ensure calls are routed optimally for AU-AU traffic ([Telnyx SIP integration guide](https://docs.vapi.ai/advanced/sip/telnyx#configure-outbound-settings)). Source: - [Telnyx SIP integration guide](https://docs.vapi.ai/advanced/sip/telnyx#configure-outbound-settings)

I've already optimized settings for Australia on Telnyx and I'm using the recommended Vapi SIP trunk settings. Calls are suffering from Latency issues still. @User

Hey! To help track down this issue, could you share: \- The call ID \- When exactly this happened (the timestamp) \- What response you expected to get \- What response you actually got instead This would really help us figure out what went wrong!

@Voice AI Guy did you ever find a solution to this?