[cisco-voip] T1 dropoffs.

[peter.casanave at us.army.mil]

I have been stuck on this issue for a few days. I am running two T1 CAS interfaces off my 3745 into an unnamed military PBX. Have my T1s built using DS0-groups emulating ISDN switch-type of 5ESS. I am able to process call thru the PBX but they drop off at 50 seconds to the "T." The weird thing is I only have this issue on calls originating from the VoIP side. Remote calls calling my IP phones work great. I was just wondering if anyone has seen this before. I know it my be a PBX issue. 

V/R,
PETER CASANAVE
SSG, USA
BBN Platoon Sergeant

----- Original Message -----
From: "Voll, Scott" <Scott.Voll at wesd.org>
Date: Thursday, July 15, 2004 11:36 pm
Subject: RE: [cisco-voip] Need Help Configuring Cat2924XL

> Do you have to run it as a trunk on the 2924?
> 
> Our 3550's look like this:
> 
> interface FastEthernet0/2
> switchport access vlan 10
> switchport mode dynamic desirable
> switchport voice vlan 102
> mls qos trust cos
> wrr-queue cos-map 1 0 1
> wrr-queue cos-map 2 2 3
> wrr-queue cos-map 3 4
> wrr-queue cos-map 4 5 6 7
> priority-queue out
> spanning-tree portfast
> 
> PC's connected to Phones and everything works.
> 
> Scott
> 
> PS.  Simon, are you using CM and what version if so?
> I had some problems with phones on the wrong vlan until the firmware
> upgraded on the phone.  Then they worked just fine.
> 
> -----Original Message-----
> From: Simon Hamilton-Wilkes [simon at jettis.com] 
> Sent: Thursday, July 15, 2004 12:27 PM
> To: 'Anthony Mendoza'; cisco-voip at puck.nether.net
> Subject: RE: [cisco-voip] Need Help Configuring Cat2924XL
> 
> The voice interfaces should look something like this:
> interface FastEthernet0/5
> switchport access vlan 416
> switchport trunk encapsulation dot1q
> switchport trunk allowed vlan 415,416
> switchport mode dynamic desirable
> switchport voice vlan 415
> spanning-tree portfast
> 
> 
> Simon 
> 
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [cisco-voip-bounces at puck.nether.net] On Behalf Of Anthony Mendoza
> Sent: Thursday, July 15, 2004 12:04 PM
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] Need Help Configuring Cat2924XL
> 
> 
> I've got a Cat2924XL with the following relevant config snippets:
> 
> rwc-2924xl-131#show vlan
> 12   DMZ                              active
> 100  IP Phones                        active    Fa0/7
> 
> interface FastEthernet0/5
>  switchport voice vlan 100
>  spanning-tree portfast
> !
> interface FastEthernet0/6
>  switchport access vlan 2
>  switchport voice vlan 100
> !
> interface FastEthernet0/7
>  switchport access vlan 100
>  spanning-tree portfast
> 
> interface FastEthernet0/24
>  switchport trunk encapsulation dot1q
>  switchport mode trunk
> 
> interface VLAN2
>  ip address 172.16.0.131 255.255.0.0
>  no ip directed-broadcast
>  no ip route-cache
> 
> 
> So...  FE0/7 works fine (as you would expect), but neither 0/5 or 0/6
> work
> ...  The phone sees the operational VLAN 100, but never gets an IP..
> What
> the heck am I doing wrong?  Cisco's docs only show the "switchport 
> voicevlan" option as being relevant.  Is there something I'm 
> missing on the
> switch config?  I've rebooted the phones and switch a few times.
> 
> Thanks for any help,
> --
> Anthony Mendoza
> 
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