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pri channel question

hasan yenilmez
Beginner
Beginner

Hi All,

I have debug output like this ;

Requested Channel 18 is not available

and when I  checked  serial interface I can see just 15 channel instead of 30

what can be the problem , cable or anything else ?

PRI-5220900#sh ip int br

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            10.3.0.4        YES NVRAM  up                    up     

FastEthernet0/1            unassigned      YES NVRAM  administratively down down   

Serial0/3/0:0              unassigned      YES unset  down                  down   

Serial0/3/0:1              unassigned      YES unset  down                  down   

Serial0/3/0:2              unassigned      YES unset  down                  down   

Serial0/3/0:3              unassigned      YES unset  down                  down   

Serial0/3/0:4              unassigned      YES unset  down                  down   

Serial0/3/0:5              unassigned      YES unset  down                  down   

Serial0/3/0:6              unassigned      YES unset  down                  down   

Serial0/3/0:7              unassigned      YES unset  down                  down   

Serial0/3/0:8              unassigned      YES unset  down                  down   

Serial0/3/0:9              unassigned      YES unset  down                  down   

Serial0/3/0:10             unassigned      YES unset  down                  down   

Serial0/3/0:11             unassigned      YES unset  down                  down   

Serial0/3/0:12             unassigned      YES unset  up                    up     

Serial0/3/0:13             unassigned      YES unset  up                    up     

Serial0/3/0:14             unassigned      YES unset  up                    up     

Serial0/3/0:15             unassigned      YES NVRAM  up                    up     

PRI-5220900#

interface Serial0/3/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn incoming-voice voice

no cdp enable

Thanks in advance

3 Replies 3

Channels are defined on the E1 controller. How is that configured? Usually when you see a subset of the total channels configured it's because only a fractional circuit was purchased from the carrier. Be sure to check with them before enabling remaining channels.

Please remember to rate helpful responses and identify helpful or correct answers.

Actually, I see  16 channels  in pvdm . the issue is when the call come it sends to channel above 16 and it drops.Although 16 channel is not full.

(Requested Channel 18 is not available.)

I configured  pri-group timeslots 1-16 command .

can reason be ios?

You have configured it wrong.

You cannot decide on which channel a call comes in,

Either configure for 30 channels, or ask telco to reduce to 15.

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