Polycom Auto Answer

I’m having some trouble with paging and intercom with some Polycom 501 phones. I am running Trixbox CE 2.2 and used Endpoint Manager to configure the phones. I followed the tutorials on setting up the auto answer in sip.cfg by changing it to Ring Answer, and here is the section from my extension_custom.conf:

exten => _7XXX,1,SIPAddHeader(Alert-Info: Ring Answer)
exten => _7XXX,n,Dial(SIP/${EXTEN:1:4})
exten => _7XXX,n,Hangup()

This doesn’t seem to work, when I dial *80110 (extension 110) it just rings
when I dial *807110 it rings for a while and then I get “Your call cannot be completed as dialed”. The receiving phone shows “device” as the caller. Any ideas?

Same exact issue here
I would appreciate responses

Try

Set(__SIPADDHEADER=Alert-Info: ;info=alert-autoanswer)

you may need to change the info bit though as this is for Aastra

you may also need to modify your sip.conf to reflect that Ring-Answer is actually in there, I dont think it is setup that way by default.