Integration via SIP for Telephony Agents

Route the call to the virtual agent's phone number by using SIP

SIP Guide: https://developer.nexmo.com/voice/sip/overview

Invite requests using your own Nexmo credentials with the following syntax:- <AGENT_PHONE_NUMBER>@sip.nexmo.com

The following headers are accepted:

X-Vgai-Session-ID (optional): allows starting a conversation using a preconfigured session.