[cisco-voip] No SDP in INVITE to basic SIP endpoint. (RESOLVED)

[Robert Kulagowski]

 > Adam Frankel wrote:
 >> You must check "MTP Required" on the endpoint and reset the device to
 >> have the SDP Info in the INVITE.  You'll also need to make sure the
 >> MRGL assigned to the device has a MTP which supports the necessary
 >> codecs for your Region configuration.


Alex Sayegh wrote:
> It may have to do with "early offer" vs "Delay
> offer" which are two different ways SIP negotiates with the other
> end. If I recall correctly the Early one was Cisco's recommended

It turns out to have been that the MRG was using the built-in MTP and not 
the one that was configured on the router.  Once the router config was 
fixed and the MTP registered we could get it to work.

The other issue is that the docs were a little unclear on the digest user 
password, so the SIP end point wouldn't register correctly.  For the 
record, don't use "Password" as the password on the SIP device, unless 
you've configured "Password" on the user owning the device.

So, as of now, the paging server is registered to CM 7, and can multicast 
out the audio.

And, by configuring the router for CME mode, I was able to setup two DNs 
and specified a multicast group using the "feed ip" command.  I also 
configured a route pattern on CM 7.0 pointing to the router and was able to 
dial the DNs and get the audio to come out the speakers, even when the 
router wasn't running in CME.

Everyone kept saying "CME / SRST" is _always_ running, but it's nice to see 
it work for yourself.