asked on

ISDN calling out issue on cisco router

Hi Experts,

The issue i have here is our cisco router (2821) can only utilise 3 out of the 6 lines we have with Telstra (Telecom provider). We have 3 x ISDN 2s and should be getting 6 in/out lines concurrently however it seems like everytime we got 3 people on the line the phones reach a max and will not call out.

Can anyone give me a series of testing commands and what i should look out for?

I've tried sh isdn status and all looks good. Also it should as all the 3 interfaces lights up but they are only using one of the 2 lines available.

cordeos

do you have all six of the ISDN lines in a routing group? are you using the routing group with a round-robin assignment? which version of Cisco telephony are you using?

it seems like you are not activating the second B-channel of each line - hence 3.

mun_84

ASKER

how do i activate the second b-channel? We are using CME 3.

cordeos

CME 3?!! wow. that's a really long time ago. are you sure the IOS version, CME version and your router ISDN cards are compatible? was this config ever working?

What IOS versiona and ISDN cards are you using?

mun_84

ASKER

yes it was working before!! How can i test the call routing.

ROM: System Bootstrap, Version 12.3(8r)T7, RELEASE SOFTWARE (fc1)

tayrob-gw uptime is 3 weeks, 4 days, 8 hours, 4 minutes
System returned to ROM by reload at 10:34:13 UTC Fri Mar 2 2012
System restarted at 10:35:16 UTC Fri Mar 2 2012
System image file is "flash:c2800nm-ipvoicek9-mz.124-5a.bin"

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Cisco 2811 (revision 53.51) with 249856K/12288K bytes of memory.
Processor board ID FHK0947F1JL
6 FastEthernet interfaces
4 ISDN Basic Rate interfaces
DRAM configuration is 64 bits wide with parity enabled.
239K bytes of non-volatile configuration memory.
62720K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

tayrob-gw#sh telephony-service
CONFIG (Version=3.3)
=====================
Version 3.3
Cisco CallManager Express
For on-line documentation please see:
www.cisco.com/univercd/cc/td/doc/product/access/ip_ph/ip_ks/index.htm

cordeos

in this case then, the easiest thing would be to recall what was changed when it stopped working. can you post your CME config - everything just before all the dn and line-dn settings....

mun_84

ASKER

interface BRI0/0/0
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn static-tei 0
trunk-group ALL_BRI
!
interface BRI0/0/1
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn static-tei 0
trunk-group ALL_BRI
!
interface BRI0/1/0
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn static-tei 0
trunk-group ALL_BRI
!
interface BRI0/1/1
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn static-tei 0
trunk-group ALL_BRI
!
voice-port 0/0/0
compand-type a-law
cptone AU
timeouts interdigit 3
timeouts call-disconnect 5
timeouts wait-release 5
!
voice-port 0/0/1
compand-type a-law
cptone AU
timeouts interdigit 3
timeouts call-disconnect 5
timeouts wait-release 5
!
voice-port 0/1/0
compand-type a-law
cptone AU
timeouts interdigit 3
timeouts call-disconnect 5
timeouts wait-release 5
!
voice-port 0/1/1
compand-type a-law
cptone AU
timeouts interdigit 3
timeouts call-disconnect 5
timeouts wait-release 5
!
!
!
!
!
dial-peer voice 1 pots
translation-profile incoming inbound_to_400
incoming called-number [896].
direct-inward-dial
!
dial-peer voice 999 pots
description Prevent toll fraud
incoming called-number .
direct-inward-dial
!
dial-peer voice 1081 pots
trunkgroup ALL_BRI
description internation
translation-profile outgoing OUTGOING_TRANSLATION_PROFILE
huntstop
destination-pattern 013[1-9]...
forward-digits all
!
dial-peer voice 1071 pots
trunkgroup ALL_BRI
description Outbound 1300
translation-profile outgoing OUTGOING_TRANSLATION_PROFILE
huntstop
destination-pattern 01300......
forward-digits all
!
dial-peer voice 1021 pots
trunkgroup ALL_BRI
description STD
translation-profile outgoing OUTGOING_TRANSLATION_PROFILE
huntstop
preference 1
destination-pattern 0[69][016789]......
forward-digits all
!
dial-peer voice 1016 pots
trunkgroup ALL_BRI
description 1800
translation-profile outgoing OUTGOING_TRANSLATION_PROFILE
huntstop
destination-pattern 01800......
forward-digits all
!
dial-peer voice 1051 pots
trunkgroup ALL_BRI
description International * shutdown *
translation-profile outgoing OUTGOING_TRANSLATION_PROFILE
huntstop
shutdown
destination-pattern 0.0011T
!
dial-peer voice 1041 pots
trunkgroup ALL_BRI
description Local
translation-profile outgoing OUTGOING_TRANSLATION_PROFILE
huntstop
destination-pattern 0[6-9][2-5]......
forward-digits all
!
dial-peer voice 1031 pots
trunkgroup ALL_BRI
description STD
translation-profile outgoing OUTGOING_TRANSLATION_PROFILE
huntstop
destination-pattern 00[2378]........
forward-digits all
!
dial-peer voice 1001 pots
trunkgroup ALL_BRI
description Mobile
translation-profile outgoing OUTGOING_TRANSLATION_PROFILE
huntstop
destination-pattern 004........
forward-digits all
!
dial-peer voice 1091 pots
trunkgroup ALL_BRI
description Telstra
translation-profile outgoing OUTGOING_TRANSLATION_PROFILE
huntstop
destination-pattern 0122.
forward-digits all
!

SH ISDN STATUS YIELDS THIS.

tayrob-gw#sh isdn status
Global ISDN Switchtype = basic-net3
ISDN BRI0/0/0 interface
dsl 0, interface ISDN Switchtype = basic-net3
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x80000003
ISDN BRI0/0/1 interface
dsl 1, interface ISDN Switchtype = basic-net3
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 1 CCBs = 0
The Free Channel Mask: 0x80000003
ISDN BRI0/1/0 interface
dsl 2, interface ISDN Switchtype = basic-net3
Layer 1 Status:
DEACTIVATED
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 2 CCBs = 0
The Free Channel Mask: 0x80000003
ISDN BRI0/1/1 interface
dsl 3, interface ISDN Switchtype = basic-net3
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 3 CCBs = 0
The Free Channel Mask: 0x80000003
Total Allocated ISDN CCBs = 0

mun_84

ASKER

I realise also it is only using the 1st channel on all 3 slots. I believe there should be 2 channels :1 and :2 right? Why is this happening?

ASKER CERTIFIED SOLUTION

mun_84

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mun_84

ASKER

I found the solution. Just and to shutdown the interface that is not in use and all the voice ports would start to work correctly.