03-08-2012 12:42 PM - edited 03-16-2019 10:01 AM
Hi guys,
I am trying to configure an E1 PRI in Nairobi. TelKom Kenya has proved that the cable and Exchange is good by having an IP Pbx onsite. I am on a CM 7.1(5b)su4. The remote site is on a 3845 GW. The E1 PRI card is VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1. The E1 is configured on 0/0/0. Does anyone have any experience in Nairobi or do you see an issue with my config. I have done atleast 60 E1s around the world and this is the first site I am having an issue thats dragging on. I do have a green light (CD) on the card when the cable is plugged in. Thank you in advance.
network-clock-participate wic 0
network-clock-participate wic 1
network-clock-select 1 E1 0/0/0
network-clock-select 2 E1 0/0/1
!
isdn switch-type primary-net5
!
voice-card 0
no dspfarm
dsp services dspfarm
!
voice service voip
h323
no h225 timeout keepalive
!
voice class codec 1
codec preference 1 g711alaw
codec preference 2 g729r8
codec preference 3 g711ulaw
!
controller E1 0/0/0
framing NO-CRC4
line-termination 75-ohm
pri-group timeslots 1-31
description E1 Telecom Kenya
!
interface Serial0/0/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn incoming-voice voice
no cdp enable
!
voice-port 0/0/0:15
cptone KE
!
Solved! Go to Solution.
03-08-2012 07:49 PM
Then most likely cable is wrong, like using ethernet patch.
03-08-2012 01:17 PM
Start with "show controllers e1".
Then "show isdn status". Don't exclude telco mistake.
03-08-2012 01:24 PM
not sure what you mean? it does show the E1 is down. Mind you I have done quite a few T1s and E1s in my career. I am looking for someone who may have had the same issue in Nairobi and was able to fix it by either changing the model of the E1 card or config.
03-08-2012 01:30 PM
E1 down == telco problem. They will swear that is not is not, but that's the same everywhere.
Note: 75ohm termination is correct only if have you coax cable. Otherwise, leave default.
Not sure why you assume its router problem and not telco.
03-08-2012 01:35 PM
Controller DOWN could mean L1 issues, replace cable if you have not already tried it. Is the telco smartjack in good state, i.e. no errors, all lights green?
Have them perform loopback check on their equipment.
Chris
03-08-2012 01:44 PM
Hi, thanks for the replies. TelKom Kenya were able to prove right to the cable by placing an IP Pabx and bringing up the PRI and placing a call. This is what I have when I do the show commands:
E1 0/0/0 is down.
Applique type is Channelized E1 - unbalanced
Cablelength is Unknown
Description: E1 Telecom Kenya
Transmitter is sending remote alarm.
Receiver has loss of signal.
alarm-trigger is not set
Version info Firmware: 20100222, FPGA: 13, spm_count = 0
Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (388 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, 388 Un
CM69CR01RT#show isdn status
Global ISDN Switchtype = primary-net5
ISDN Serial0/0/0:15 interface
dsl 0, interface ISDN Switchtype = primary-net5
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 0 CCBs = 0
The Free Channel Mask: 0x00000000
Number of L2 Discards = 0, L2 Session ID = 0
ISDN Serial0/0/1:15 interface
E1 0/0/0 is down.
Applique type is Channelized E1 - unbalanced
Cablelength is Unknown
Description: E1 Telecom Kenya
Transmitter is sending remote alarm.
Receiver has loss of signal.
alarm-trigger is not set
Version info Firmware: 20100222, FPGA: 13, spm_count = 0
Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 320.
Data in current interval (388 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, 388 Un
CM99CR01RT#show isdn status
Global ISDN Switchtype = primary-net5
ISDN Serial0/0/0:15 interface
dsl 0, interface ISDN Switchtype = primary-net5
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 0 CCBs = 0
The Free Channel Mask: 0x00000000
Number of L2 Discards = 0, L2 Session ID = 0
ISDN Serial0/0/1:15 interface
03-08-2012 01:50 PM
Do you have coax, or UTP cable coming out of telco temination ?
You're set for 75ohm/unbalance/coax. That is the only variable for L1.
Note sometime after they prove it working, it breaks just after.
03-08-2012 01:57 PM
it's a UTP cable from the Telcom. I had 75 ohms out but the Telco asked me to add it. I took it off and same issue. thanks.
03-08-2012 07:49 PM
Then most likely cable is wrong, like using ethernet patch.
03-08-2012 04:49 PM
isdn switch-type primary-net5
Is the isdn switch type correct?
03-08-2012 07:49 PM
Chris Tolley wrote:
isdn switch-type primary-net5
Is the isdn switch type correct?
Wrong swtich type doesn't cause controller down!
However, it is right.
03-09-2012 12:31 PM
I think you're correct. This could be a cable issue, eventhough it works on an IP Pabx the pins could be incorrect when it's plugged in. I will send the pin configs to the cablers. Thanks for your input
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