I saw this problem before... to solve that, I needed to hack asterisk
to remove a header SIP field.
Check your ACT phone log, and you can figure out which filed is that.
Then, comment that filed from your chan_sip.c and recompile asterisk..
and that's it.. it only happens with ACT phones.


I wonder if anybody knows from where we can download ACT firmware updates.

Isamar


On Wed, 25 Oct 2006, joe, at j4computers ([EMAIL PROTECTED]) wrote:

I have a setup with a polycom 601 and an act p160s.  All on local segment, no 
NAT.

Can call the act p160s, from the polycom, rings, connects, and a conversation can take place.  
The reverse is not true, Dialing from the act to the polycom does not work.  SIP debug shows, 
at the end, "Incoming call: got sip response 416 "unsupported URI Scheme" back 
from 192.168.0.xxx.  Which is the act phone, the orginator.

One presumes this is a configuration issue with the Act phone.  Any clues?   
Such as what a proper config for this phone should look like?  Act support has 
made an initial response, but there is a big time lag them being on the other 
side of the earth.

joe a.

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