asterisk users - Jun 2006 - no IVR audio but phone to phone fine

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I'm having trouble getting my IVR to produce audio onto my cisco 7940
handset using SIP.

I've got CentOS 4.3 running * 1.2.9.1 and the corresponding latest
releases of libpri, zaptel, addons and sounds. I'm using two extensions
to test that successfully dial each other and can talk back and forth
fine. When I dial into the IVR, I get a normal looking output from the
console:

    -- Executing Goto("SIP/2601-588e", "demo|s|1") in new
stack
    -- Goto (demo,s,1)
    -- Executing Wait("SIP/2601-588e", "4") in new stack
    -- Executing Answer("SIP/2601-588e", "") in new stack
    -- Executing Set("SIP/2601-588e", "TIMEOUT(digit)=5") in
new stack
    -- Digit timeout set to 5
- -- Executing Set("SIP/2601-588e", "TIMEOUT(response)=10")
in new stack
    -- Response timeout set to 10
- -- Executing BackGround("SIP/2601-588e", "demo-congrats")
in new stack
    -- Playing 'demo-congrats' (language 'en')

All seems as if the output should be directed onto the SIP channel.
That's not happening.

I changed the default RTP ports to be the same as those on the phones,
16384 > 32778
but am still having trouble getting the audio to play on this machine. I
 suspect a package missing, but don't know what that could be and I'm
 not able to find much help on this in the history of the list. Other
 issues have been resolved, but I can't find anything about this.

Please help!

Sincerely,

Jonathan Miller

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