[cisco-voip] Caller ID shows as Unknown Number - until call is answered

[Amit Kumar]

Hi Jeff,

When you say difference is connection play...then which port have
connection play...working or non-working.

Also in debug at what stage gateway received caller ringing... Or at later
stage. And also when did gateway sent caller I'd info to cucm.

Collecting ccapi, vpm, mgcp debugs will help.

Thanks,
Amit
On 23-Nov-2015 10:11 pm, "Jeffrey Girard" <jeffrey.girard at girardinc.com>
wrote:

> Also posted on Cisco Support Forum
>
> CUCM 9.0.1.10000-37 on ESX5.5
>
> 2811 Gateway with VIC2-4FXO
>
> IOS version Adv Enterprise 15.1(3) T1
>
> MGCP is used between gateway and CUCM
>
> The issue:  on one of the ports, Caller ID is not displayed on the phone
> until after the call is answered.  While ringing, the Caller ID displays
> Unknown number.
>
> What I have checked:  debug voice ccapi inout shows that the caller ID is
> received by the gateway.  debug vpm signal also shows that the caller id is
> received.  When I pull the caller id hex codes from the VPM signal debug
> and run them through a converter, I get the correct caller ID information.
>
> I put an analog phone with display directly on the line from the cable
> modem and tested.  Caller ID was displayed between the first and second
> rings.
>
> I moved the entire configuration to an open voice port (changed the dial
> peer and configured the new gateway in CUCM).  Conducted another test.
> Same results as original.  Call rings inbound.  Display on phone reads
> Unknown Number.  As soon as the call is answered, the display changes to
> reflect the correct caller ID.
>
> Other information:  This is a 4 port card.  3 ports are active an in use.
> All 3 ports are configured identically, except for the connection plar opx
> command.  Using the same cell phone, if I call into the other FXO ports,
> caller ID is displayed on the phones as expected (while the call is still
> in the ringing state).
>
> All 3 phone lines are being sourced from the same provider.
>
> Any ideas?
>
> (Yes, I know that I can change to H323, but that is not what I want to
> do....I want to make this work as it should)
>
> Jeff
>
>
>
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