AnchorSite Configuration

AnchorSite determines which Telnyx Point of Presence (PoP) handles media routing for SIP calls.

Configuration modes

Automatically selects the optimal PoP based on ICMP ping latency measurements to the SIP endpoint. Requirements:

IP/FQDN authentication: Whitelist Telnyx media IP addresses for ICMP.
Credential authentication: Include username in Contact header or X-Telnyx-Username header:

Contact: <sip:user@192.0.2.10:5060>
X-Telnyx-Username: connection_username

Explicitly select a PoP for predictable routing behavior. Available PoPs:

You can configure AnchorSite in the Telnyx Portal by editing an IP Connection:

{
  "anchorsite_override": "latency"
}

For manual selection:

{
  "anchorsite_override": "Chicago, IL"
}

If the selected PoP is unavailable (maintenance, outage, health check failure), calls automatically reroute through the next available PoP.