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SBC T1 CAS Supertrunk shows seized

Anything special for configuring a SBC T1 CAS Supertrunk? All six channels show seized intermittent. I have to call telco to have central office reset the channels. Happens 2-3 times a day.

BLW-2801#show voice port summary

IN OUT

PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC

========= == ============ ===== ==== ======== ======== ==

0/0/0 -- fxo-ls up dorm idle on-hook y

0/0/1 -- fxo-ls up dorm idle on-hook y

0/0/2 -- fxo-ls up dorm idle on-hook y

0/0/3 -- fxo-ls up dorm idle on-hook y

0/2/1:0 01 e&m-wnk up up seized idle y

0/2/1:0 02 e&m-wnk up up seized idle y

0/2/1:0 03 e&m-wnk up up seized idle y

0/2/1:0 04 e&m-wnk up up seized idle y

0/2/1:0 05 e&m-wnk up up seized idle y

0/2/1:0 06 e&m-wnk up up seized idle y

controller T1 0/2/1

framing esf

linecode b8zs

ds0-group 0 timeslots 1-6 type e&m-wink-start

description SUPERTRUNK

dial-peer voice 7075 voip

destination-pattern 70..

voice-class codec 1

voice-class h323 1

session target ipv4:10.168.32.12

incoming called-number .

dtmf-relay h245-alphanumeric

no vad

!

dial-peer voice 210 pots

destination-pattern 9.T

incoming called-number .

port 0/2/1:0

3 REPLIES
Bronze

Re: SBC T1 CAS Supertrunk shows seized

Controller t1 1/0

Framing esf

Linecode b8zs

Ds0-group 0 timeslots 1-24 e&m-wink-start

Try ech0 cancel command:

Voice-port 1/0:0

Ech0-cancel coverage 32

Try this URL:

http://www.cisco.com/warp/customer/788/signalling/cas-config.html

Re: SBC T1 CAS Supertrunk shows seized

I had a problem the other night on my CMM where my CAS T1 line was showing 18 channels of the 24 "Pending"... it actually did not show pending until I "shut" "No shut" the port, then it popped up. I found some tech dock on Cisco's site to actually "reload" the whole card to get the channels to reset. Gateway reset in CCM would not do it. Reload only.

So you may want to try this and look at this fix

CSCef26431

Symptoms: Voice ports of a VIC-2E/M are stuck in "S_OPEN_PEND" state.

When you enter the shutdown command followed by the no shutdown command on

an affected voice port, the following message is displayed:

%C542-1-NO_RING_DESCRIPTORS: No more ring descriptors on recEive And

transMit 2/0/0. Msg id=26,Len=8^Z

Conditions: This symptom is observed intermittently on a Cisco 3745 that

runs Cisco IOS Release 12.3(9) and that functions as a gateway.

Workaround: Reload the Cisco gateway.

Re: SBC T1 CAS Supertrunk shows seized

My bug was CSCsc11833

Replaced the PVDM2-X; that fixed the issue. Apparently some bad PVDMs made it out of manufacturing.

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