PRI trunk question

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Feb 26th, 2008
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Hi all,


I'm trying to send a call through a T1 PRI trunk from my 6608 --> CUCM --> router.


What I'm trying to do is this for example:

dial--> 1234 CUCM send to trunk --> router

using this command:

debug voip dialpeer all

Currently I get no log of any matching dial peers.


This is my current config on the router.

isdn switch-type primary-ni


controller T1 0/0/0

framing esf

linecode b8zs

pri-group timeslots 1-24

!

interface Serial0/0/0:23

no ip address

encapsulation hdlc

isdn switch-type primary-ni

isdn incoming-voice voice

no cdp enable

!


voice-port 0/0/0:23

!

dial-peer voice 4000 pots

destination-pattern .

incoming called-number .

direct-inward-dial

port 0/0/0:23

!


Any suggestions?


Tia,

-Fred

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Jaime Valencia Tue, 02/26/2008 - 21:00
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OK, first of all i assume you're using H323 as the control protocol for the router, MGCP for the 6608


what do you receive on the 6608? 4 digits?

ie: 1234


do you have a route pattern for 1234??

Is the route pattern configured to go thru the router?


are you adding or removing anything at CCM level?


are you able to place any other call thru that router??


do a debug voip ccapi inout to verify if the information is being sent from the CCM server


BTW the dial-peer from the posted config is to match a digit... literally, 1 digit and only 1 digit so i can tell you that's sure not being used if you send 4 digits


HTH

fredj1234 Wed, 02/27/2008 - 13:32
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Thanks for your reply,


OK, first of all i assume you're using H323 as the control protocol for the router, MGCP for the 6608


Using mgcp for the 6608, if I've defined all the parameters on my router then its using H323 ? I also defined the MFT-T1 on ccm for mgcp, but I dont think thats proper.


what do you receive on the 6608? 4 digits?

ie: 1234

yes


do you have a route pattern for 1234??

Is the route pattern configured to go thru the router?


yes, I'm sending the pattern 12XX over the route list that contains the PRI trunk, im not sure what partition , i've tried it on AllInternalPT and I immediatly got fast busy signal while calling. Next, I tried setting it to other partitions suchs as external dialing partitions, phone # rang and said call connect be completed as dialed.


are you adding or removing anything at CCM level?

Yes, I've defined my MFT-T1 Card on my CCM, I've assigned


are you able to place any other call thru that router??


do a debug voip ccapi inout to verify if the information is being sent from the CCM server


debug voip ccapi inout or debug voip dialpeer all both of these display nothing, it seems the ccm is not sending the traffic at all.

Jaime Valencia Wed, 02/27/2008 - 13:43
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quick question, is the isdn status up?

are you able to place calls on the router??

if the router is not even working with any other calls i's suggest to check the configuration under CUCM and in the GW.

i assume you DID configured the router as H323 in CUCM.

also that you DO have all the dial-peers configured at the router in the h323 config.


as i already mentioned the dial-peer you have on the post will only route calls in which you dial 1 digit, if you want 4 digits use .... or .T


there is a lot of documentation on CCO if you look for h323 config samples and also for dial-peers


HTH

fredj1234 Wed, 02/27/2008 - 15:26
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I'm not entirely sure how to answer all the questions accurately, as of now I have:



dial-peer voice 1200 voip

preference 1

destination-pattern [1-9]

session target ipv4:10.0.0.94

incoming called-number 12..

dtmf-relay h245-signal

codec g711ulaw

fax rate 14400

fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback cisco

!

dial-peer voice 1201 pots

destination-pattern 12..

incoming called-number 12..

direct-inward-dial

port 0/2/1:23

!

!

gateway

timer receive-rtp 1200

!


LAR01#sh isdn status serial 0/2/1:23

Global ISDN Switchtype = primary-ni


%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 2. Layer 3 output may not appl

y


ISDN Serial0/2/1:23 interface

dsl 2, interface ISDN Switchtype = primary-ni

L2 Protocol = Q.921 0x0000 L3 Protocol(s) = CCM MANAGER 0x0003

Layer 1 Status:

ACTIVE

Layer 2 Status:

TEI = 0, Ces = 1, SAPI = 0, State = AWAITING_ESTABLISHMENT

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 2 CCBs = 0

The Free Channel Mask: 0x807FFFFF

Number of L2 Discards = 0, L2 Session ID = 119

Total Allocated ISDN CCBs = 0




LAR01#sh h323 GATEway


H.323 STATISTICS AT 6d19h


H.225 REQUESTS SENT RECEIVED FAILED

Setup 3 33 0

Setup confirm 0 3 0

Alert 0 0 0

Progress 4 0 0

Call proceeding 4 3 0

Notify 0 0 0

Info 0 0 0

User Info 0 0 0

Facility 24 24 0

Release 32 7 0

Reject 0 0 0

Passthrough 0 0 0


H225 establish timeout 0

RAS failed 0

H245 failed 0



RAS MESSAGE REQUESTS SENT CONFIRMS RCVD REJECTS RCVD

GK Discovery grq 0 gcf 0 grj 0

Registration rrq 0 rcf 0 rrj 0

Admission arq 0 acf 0 arj 0

Bandwidth brq 0 bcf 0 brj 0

Disengage drq 0 dcf 0 drj 0

Unregister urq 0 ucf 0 urj 0

Resource Avail rai 0 rac 0

Req In Progress rip 0



RAS MESSAGE REQUESTS RCVD CONFIRMS SENT REJECTS SENT

GK Discovery grq 0 gcf 0 grj 0

Registration rrq 0 rcf 0 rrj 0

Admission arq 0 acf 0 arj 0

Bandwidth brq 0 bcf 0 brj 0

Disengage drq 0 dcf 0 drj 0

Unregister urq 0 ucf 0 urj 0

Resource Avail rai 0 rac 0

Req In Progress rip 0



DISC CAUSE CODE FROM OTHER PEER FROM H323 PEER

1 unassigned number (1) 11 0

3 no route to destinatio 17 0

16 normal call clearing ( 0 7

44 no requested circuit ( 1 0


H323 gateway internal event queue:

Events queued 0, free 4, held 4, allocated 4 times, exceed max 0 times

Max serviced 6, Max serviced exceed 0

no dest 0, no buffers 0, call flushes 0


CRV statistics

In use: 0

Max collisions obtaining crv: 0



I greatly appreciate your help, do you have any recommendations for good cisco GW/GK books?


Jaime Valencia Wed, 02/27/2008 - 15:33
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TEI = 0, Ces = 1, SAPI = 0, State = AWAITING_ESTABLISHMENT


is NOT good it should be:


TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED


you do not have layer 2 up, that's why no calls are going thru. check framing, linecode, timing, etc.


POTS dial-peers discard any exact digits they match, they only send wildcards if you do not instruct them to send all the digits on N digits. add forward-digits all to the pots dial-peer


some good links:


Dial Peer Configuration on Voice Gateway Routers

http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps5207/products_configuration_guide_book09186a008086f25e.html


Configure a Cisco IOS Software Voice-enabled Router as an H.323 Gateway

http://www.cisco.com/en/US/partner/products/sw/voicesw/ps556/products_tech_note09186a0080094636.shtml#iosvoice


H.323 Gateway Dial-Peer Configuration for Cisco CallManager Server Redundancy

http://www.cisco.com/en/US/partner/products/sw/voicesw/ps556/products_configuration_example09186a0080094852.shtml


Dial Peer Enhancements

http://www.cisco.com/en/US/partner/docs/ios/12_1t/12_1t1/feature/guide/dt0390s7.html


Understanding the Operational Status of Dial Peers on Cisco IOS Platforms

http://www.cisco.com/en/US/partner/tech/tk652/tk90/technologies_tech_note09186a008010e6d1.shtml



Jaime Valencia Wed, 02/27/2008 - 15:37
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one more thing, post the controller and voice port config, i think you're combining MGCP with H323 config


%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 2. Layer 3 output may not appl

y


if you have isdn bind-l3 ccm-manager in the config that is for MGCP


HTH

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