ISDN does not show normal for voice

[eigrpy]

Hi The command "show isdn status" shows that there is message ---  "TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED" in the output. then I use debug isdn q921. but it does not show any reactions regarding isdn. Anyone have any suggestion? The following is full output of the command. Thank you

R1(config-controller)#do sh isdn statu
Global ISDN Switchtype = primary-ni
ISDN Serial0/1/0:23 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: 0x8000000F
Number of L2 Discards = 0, L2 Session ID = 6
Total Allocated ISDN CCBs = 0
R1(config-controller)#

[Venkatesh Perumal]

If debug isdn q921 is turned on and you do not receive any debug outputs, first check and make sure you have enabled terminal monitor. Then try to reset the controller or the D-channel and place a call to get debug outputs. You can use the clear controller t1 x or clear interface serial x:23 command to reset the line.

and the state=TEI_ASSIGNED indicates that the router has lost connectivity to the switch, i.e. no layer 2 frames exchange with the switch. follow the below troubleshooting doc for the same. also post the debugs here in case of issue.

http://www.cisco.com/c/en/us/support/docs/wan/t1-e1-t3-e3/8131-T1-pri.html

http://www.cisco.com/c/en/us/support/docs/dial-access/integrated-services-digital-networks-isdn-channel-associated-signaling-cas/5707-bri-layer2.html

regards,

-Do rate helpful posts.

[eigrpy]

Thank you for your reply. 

and the state=TEI_ASSIGNED indicates that the router has lost connectivity to the switch

The switch you mentioned is isdn cloud ? Now the two routers are connected through t1 cable directly. I can see debug message, but cannot see isdn related debug message. The below is message of show ip inte brief 

R2#sh ip int bri
Interface IP-Address OK? Method Status Protocol
Serial0/0/0 unassigned YES NVRAM down down
Serial0/1/0:0 unassigned YES unset down down
Serial0/1/0:1 unassigned YES unset down down
Serial0/1/0:2 unassigned YES unset down down
Serial0/1/0:3 unassigned YES unset down down
Serial0/1/0:23 unassigned YES unset up up
R2#

[Marcelo Morais]

Hi,

please, post the result of the following command:

show controllers T1

Regards

[eigrpy]

Please see the below:

R1#sh controllers T1
T1 0/1/0 is up.
Applique type is Channelized T1
Cablelength is long 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info Firmware: 20100222, FPGA: 13, spm_count = 0
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (626 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
626 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
626 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 39 15 minute intervals):
10895 Line Code Violations, 31 Path Code Violations,
20273 Slip Secs, 1 Fr Loss Secs, 5 Line Err Secs, 3 Degraded Mins,
20271 Errored Secs, 4 Bursty Err Secs, 1 Severely Err Secs, 14631 Unavail Secs
T1 0/1/1 is down.
Applique type is Channelized T1
Cablelength is long 0db
Transmitter is sending remote alarm.
Receiver has loss of signal.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Failure LOF State:Failure
Version info Firmware: 20100222, FPGA: 13, spm_count = 0
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (626 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 626 Unavail Secs
Total Data (last 39 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 35100 Unavail Secs

R2(config-controller)#do sh contro t1
T1 0/1/0 is up.
Applique type is Channelized T1
Cablelength is long 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info Firmware: 20100222, FPGA: 13, spm_count = 0
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (488 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
488 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
488 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 7 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations,
6300 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
6300 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

[Marcelo Morais]

Hi,

if R1 and R2 are connected via T1, they are configured as 'clock source line' ... one of them should be configured as 'clock source internal'.

Take a look at the following: clock source.

Hope this helps

[eigrpy]

Thank you so much for your help. The two commands: clock source internal and clock source line are added under controller T1 in the two routers, respectively. But I have not seen any changes yet. 

[Marcelo Morais]

Hi,

please use the following commands to check the 'SLIP Secs' error:

clear counters
show controllers T1

also, double check if both routers have the commands bellow (as an example):

network-clock-participate wic 1
network-clock-select 1 T1 0/1/0

Hope this helps

[Aman Soi]

can u share show version and show diag/inventory from router?

regds,

aman

[eigrpy]

Please see it in attachment

I just noticed that attachment is from R2. The two routers are the same type, but R1 is gateway of cucm

[Nadeem Ahmed]

the basic things which needs to be troubleshooting to bring the multiframe established.

on both side framing,line code should intact (it should be same) no error on controllers, Cable should be fine.Clocking

http://www.cisco.com/c/en/us/support/docs/wan/t1-e1-t3-e3/8131-T1-pri.html

One important while bringing up the interface that you need to make one side as network and other side as user or vice-versa. Default is set to user if you enable/configured this command you would be able to seen this command under the serial interface.if its not present make one side as network otherwise it will remain in TIE assigned mode.  last and possible you can debug and see who is not sending or acking SABME/UA

Inter serial 0/0/0:23====== <T1 >

isdn protocol-emulate network

[eigrpy]

Yes, the two routers are missing the command in the two routers:

network-clock-select 1 T1 0/1/0

I notice the two commands: clock source internaland clock source line are needed to remove in the two routers, respectively before adding network-clock-select 1 T1 0/1/0

Then, when i tried to add the two commands back to the router, I got the message:

R2(config-controller)#clock source internal
R2(config-controller)#
*Dec 27 03:32:21.789: % Port had been configured for network clock.
Remove it from network clock before changing to clocking internal

Do think we still need the command clock source internal/line ?