ISDN PRI configuration on 2800 Problem

jordan.bean · ‎02-06-2009

We've been using MGCP w/D channel backhaul in the past with no problems. I'm now trying to configure a Cisco 2851 with a PRI using H.323. I can't figure out why my POTS dial peer is showing "down" on "OUT STAT".

AD PRE PASS OUT

TAG TYPE MIN OPER PREFIX DEST-PATTERN FER THRU SESS-TARGET STAT PORT

1 voip up up ....... 1 syst ipv4:10.10.10.10

2 voip up up ....... 2 syst ipv4:10.10.10.11

10 pots up up .T 0 down 1/0:23

PRI Channel Statistics:

ISDN Se1/0:23, Channel [1-24]

Configured Isdn Interface (dsl) 0

Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)

Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4

State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3

Service State (0=Inservice 1=Maint 2=Outofservice 8=MaintPend 9=OOSPend)

Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4

State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2

controller T1 1/0

framing esf

linecode b8zs

pri-group timeslots 1-24

interface Serial1/0:23

description PRI

no ip address

no logging event link-status

isdn switch-type primary-ni

isdn incoming-voice voice

no cdp enable

dial-peer voice 1 voip

preference 1

destination-pattern .......

voice-class codec 1

voice-class h323 1

session target ipv4:10.10.10.10

incoming called-number .

dtmf-relay h245-signal h245-alphanumeric

no vad

!

dial-peer voice 2 voip

preference 2

destination-pattern .......

voice-class codec 1

voice-class h323 1

session target ipv4:10.10.10.11

incoming called-number .

dtmf-relay h245-signal h245-alphanumeric

no vad

!

dial-peer voice 10 pots

destination-pattern .T

incoming called-number .

direct-inward-dial

port 1/0:23

forward-digits all

Any help would be greatly appreciated.

Ayodeji Okanlawon · ‎02-06-2009

Hi,

Can you post the output of your sh isdn status and sh ip interface brief

Please rate all useful posts

jordan.bean · ‎02-06-2009

XXX-2851#show isdn status serial 1/0:23

Global ISDN Switchtype = primary-4ess

ISDN Serial1/0:23 interface

dsl 0, interface ISDN Switchtype = primary-ni

Layer 1 Status:

ACTIVE

Layer 2 Status:

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

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 0 CCBs = 0

The Free Channel Mask: 0x807FFFFF

Number of L2 Discards = 0, L2 Session ID = 1

Total Allocated ISDN CCBs = 0

BOA-2851#show ip interface brief

Interface IP-Address OK? Method Status Protocol

GigabitEthernet0/0 172.26.3.1 YES NVRAM up up

GigabitEthernet0/1 172.26.4.1 YES NVRAM up up

Serial0/1/0 unassigned YES NVRAM up up

Serial0/2/0 unassigned YES NVRAM down down

Serial0/3/0 unassigned YES NVRAM up up

Serial1/0:0 unassigned YES unset down down

Serial1/0:1 unassigned YES unset down down

Serial1/0:2 unassigned YES unset down down

Serial1/0:3 unassigned YES unset down down

Serial1/0:4 unassigned YES unset down down

Serial1/0:5 unassigned YES unset down down

Serial1/0:6 unassigned YES unset down down

Serial1/0:7 unassigned YES unset down down

Serial1/0:8 unassigned YES unset down down

Serial1/0:9 unassigned YES unset down down

Serial1/0:10 unassigned YES unset down down

Serial1/0:11 unassigned YES unset down down

Serial1/0:12 unassigned YES unset down down

Serial1/0:13 unassigned YES unset down down

Serial1/0:14 unassigned YES unset down down

Serial1/0:15 unassigned YES unset down down

Serial1/0:16 unassigned YES unset down down

Serial1/0:17 unassigned YES unset down down

Serial1/0:18 unassigned YES unset down down

Serial1/0:19 unassigned YES unset down down

Serial1/0:20 unassigned YES unset down down

Serial1/0:21 unassigned YES unset down down

Serial1/0:22 unassigned YES unset down down

Serial1/0:23 unassigned YES manual up up

Kenneth Mohammed · ‎02-06-2009

Hello,

Layer 2 needs to say MULTIPLE_FRAME_ESTABLISHED. Do term mon and debug isdn q921 and see what the output is and post it.

Hope that helped, if so please rate.