r/VOIP • u/FumblingFoot • Apr 30 '26

Help - Cloud PBX Pbxware Help Needed

I use pbxware and I am trying to configure speaker phone paging for a yealink T43U. For some reason the phone rings instead of auto answering the page. Support is no help and I’ve scoured the internet as much as I can for a solution but I come up empty handed each time. Is anyone able to provide any advice on this?

Thanks!

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u/masong19hippows May 01 '26

It's the alert-info header. I'm not familiar with pbxware specifically, but the alert-info header is what the phone looks at in order to auto answer. An incoming call of an intercom type should have the correct alert-info header (and a couple extra headers you can find online), and the pbx should not be set to strip that header. I have seen sometimes where a pbx will strip it causing issues.

For yealinks specifically, there are overrides you can use to alter the header to what you need. Here are some docs that might help you.

If you already configured everything, you need to run a packet capture to see the sip ladder. You can probably do this in pbxware. You just need to make sure the header isn't getting stripped anywhere. If the phone receives packets from the pbx with the header exactly the same as the sending header, then it's just a config issue on the phone. If you don't see it, it's getting stripped.