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ISDN calling out issue on cisco router

Posted on 2012-03-24
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Last Modified: 2012-04-22
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.
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Question by:mun_84
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9 Comments
 
LVL 5

Expert Comment

by:cordeos
Comment Utility
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.
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Author Comment

by:mun_84
Comment Utility
how do i activate the second b-channel? We are using CME 3.
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LVL 5

Expert Comment

by:cordeos
Comment Utility
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?
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Author Comment

by:mun_84
Comment Utility
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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If you require further assistance please contact us by sending email to
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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
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LVL 5

Expert Comment

by:cordeos
Comment Utility
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....
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Author Comment

by:mun_84
Comment Utility
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
0
 

Author Comment

by:mun_84
Comment Utility
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?
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Accepted Solution

by:
mun_84 earned 0 total points
Comment Utility
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.
0
 

Author Closing Comment

by:mun_84
Comment Utility
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.
0

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