[cisco-voip] FW: fxo mgcp caller-id

[Ryan Ratliff]

This is a limitation of the MGCP protocol as it has no facility to pass 
caller ID information except during initial call setup.  Since an 
analog FXO port receives calling party information after the first ring 
(or two) it just doesn't work.   To get FXO caller id you have to use 
H.323.

-Ryan
On Aug 3, 2005, at 6:02 PM, Greg McAllister wrote:

 
 

From: Greg McAllister [mailto:gmcallis at mtco.com]
Sent: Wednesday, August 03, 2005 5:01 PM
To: 'cisco-voip at puck.nether.net'
Subject: fxo mgcp caller-id
 
Greetings.
What’s the real story ?
Is it possible to display caller-id received through VIC2-FXO ports in 
an MGCP (2801) gateway on Cisco phones? I’m reading some disturbing 
information related to FXO-received CID and MGCP not being compatible, 
and I cannot believe that it can’t be done since the router IOS gateway 
is clearly showing the CID in the “show” commands.
Thanks, Greg.
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