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1172972
2013 Mar 21
1
Cisco SPA 5xx/3xx/9xx phones don't respond to SIPAddHeader(Call-Info: answer-after=0)
All other phones we work with will auto-answer when we do this:
[macro-paging1way]
exten => s,1,SIPAddHeader(Call-Info: answer-after=0)
exten => s,n,Page(${PAGINGLIST})
exten => s,n, Hangup
The SPA phones simply ring. I have verified that Auto Answer Page is set
to yes (the default). We've tried a variety of firmware versions and phone
ages, going back to an old 942 and new 504s.