<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">It doesn't look like your call ever gets setup in this trace, if you enable the sip trace you might see a bit more, but it looks like we are receiving a 480 response from the called phone.<div><br></div><div>Mike</div><div><br><div><div>On Nov 15, 2009, at 12:42 PM, <a href="mailto:vedamaker@netscape.net">vedamaker@netscape.net</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><font color="black" size="2" face="arial"><font size="2"><font face="Arial, Helvetica, sans-serif"><br>
I am FS beginner and I have a basic PBX setup using FS with the Siemens
A580 IP Phones. I thought everything was working fine since I could
make and receive basic calls without any obvious issues. However,
recently I wanted to use more advanced functions in FS and discovered
that I could not use any of DTMF based functions (e.g. call
transfer/record) during calls with the Siemens IP phones. The same
functions work fine when I use a softphone. So, I started looking at
the log file and I think there is some problem between the Siemens IP
phones and FS (log file attached below). It seems that when a call
comes in, FS calls the extensions and then the extensions send back
confirmation and SIP status codes. With softphone extensions, I see
180 (Ringing) and 200 (OK) as normal status. However, with Siemens IP
phone extensions, I see 480 (Temporarily Unavailable) which seems to
cause FS to terminate the session. So, FS log shows there is actually
no active session which explains why it does not performs DTMF
detection for the call session. However, the call to Siemens IP phones
actually continues with ringing when an extension handset answers the
call is established with the caller with full voice communication. I
don't know how FS works but this seems very strange. I would like to
know how to get FS to work properly with Siemens IP phones including
the DTMF functions during calls. Any help would be appreciated.
<br>
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