We have recently setup a SIP-Register Trunk for an ITSP and one of the requirements was to alter the User-Agent to fw2022011916-IVV34200.xxxxxxx
Fortunately the other SIP Trunks don't take into account the UA field, and keep working regardless.
If they did however, only one SIP Trunk would be able to register.
Based on this, I would like to ask R&D if the UA setting can migrate to the Trunk setup, and if Yeastar PBX models can support a different SIP UA per Trunk.
Thanks a lot.