E1 configuration problems

[cameroun]

I have some problem for the deployment of an E1 line . I 'll explain .

I have a CME : CISCO2921 / K9
 C2900 Software ( C2900 - UNIVERSALK9 -M) , Version 15.4 (3) M1

with:
a VWIC3-2MFT -T1 / E1 card - 2 -Port RJ- 48 and VIC2-4FXO

I configured a GSM gateway to a FXO port as you see in the configuration, and calls pass through this gateway normally.
there is no problem on calls passing through this gateway.

the problem is with the configuration of E1 .

E1 controller is UP and I did not alarm .

so I assume that there is a concern on my setup .

calls that are supposed to go through this port does not get out . and casually refer to nothing.

we tried to remove the bridge and give the dial- peer voice 100 pots path E1 port. But no results.

Could you help us?

Herewith , the show run and debug some results .

[moyo oyegunle]

Hello

1 Could you post the result of sh isdn status

2 Not very familiar with E1 configuration does it require line coding(HDB3) under the controller

[Wilson Samuel]

Hi,

Could you please post outputs from the following debugs:

1. sh isdn status

2. debug isdn q931

Regards

[cameroun]

hi,

Here the output of debug isdn q931

L2
*Jun 10 18:31:50.702: ISDN Se0/1/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2
*Jun 10 18:31:59.702: ISDN Se0/1/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2
*Jun 10 18:32:08.702: ISDN Se0/1/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2
*Jun 10 18:32:17.702: ISDN Se0/1/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2
*Jun 10 18:32:26.702: ISDN Se0/1/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2
*Jun 10 18:32:35.702: ISDN Se0/1/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2
*Jun 10 18:32:44.702: ISDN Se0/1/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2

------show isdn status--------------

ISDN Serial0/1/1:15 interface
        dsl 1, interface ISDN Switchtype = primary-net5
    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:  0xFFFF7FFF
    Number of L2 Discards = 0, L2 Session ID = 253
 --More--
*Jun 10 18:34:05.702: ISDN Se0/1/1

---------------------debug isdn q921-----------------------------

*Jun 10 17:58:51.650: ISDN Se0/1/1:15 Q921: User TX -> SABMEp sapi=0 tei=0
*Jun 10 17:58:52.650: ISDN Se0/1/1:15 Q921: User TX -> SABMEp sapi=0 tei=0
*Jun 10 17:58:53.650: ISDN Se0/1/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2
*Jun 10 17:58:58.650: ISDN Se0/1/1:15 Q921: L2_EstablishDataLink: sending SABME
*Jun 10 17:58:58.650: ISDN Se0/1/1:15 Q921: User TX -> SABMEp sapi=0 tei=0
*Jun 10 17:58:59.650: ISDN Se0/1/1:15 Q921: User TX -> SABMEp sapi=0 tei=0
*Jun 10 17:59:00.650: ISDN Se0/1/1:15 Q921: User TX -> SABMEp sapi=0 tei=0
*Jun 10 17:59:01.650: ISDN Se0/1/1:15 Q921: User TX -> SABMEp sapi=0 tei=0
*Jun 10 17:59:02.650: ISDN Se0/1/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2

==============================

thank you in advance

[Rejohn Cuares · Accepted solution]

Make sure you conform to your provider's E1 settings like framing, linecode, clock, active channels, switch type, etc.

E1 troubleshooting guide:

http://www.cisco.com/c/en/us/support/docs/wan/t1-e1-t3-e3/14167-E1-pri.html

[Muthurani Lavanya Paneerselvam]

Hi

Refer this link for E1 PRI troubleshooting if you are terminating E1 at the GSM gateway. As described in the section "Using the show isdn status command", make sure the Layers are Active and Multiple Frame Established.  

http://www.cisco.com/c/en/us/support/docs/wan/t1-e1-t3-e3/14167-E1-pri.html

Regards

Lavanya

[Rejohn Cuares]

Before posting your running config make sure you remove sensitive parts like username/password, public IPs, etc.

Make sure your ISDN L1 and L2 status are both  ACTIVE and MULTIPLE_FRAME_ESTABLISHED. Sample output below.

VG#sh isdn status
Global ISDN Switchtype = primary-net5
ISDN Serial0/0/0:15 interface
        dsl 0, interface ISDN Switchtype = primary-net5
    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:  0x800F7FFF
    Number of L2 Discards = 0, L2 Session ID = 1
    Total Allocated ISDN CCBs = 0