Solved: looks like the other side

Anukalp S · ‎02-10-2015

Hello, i have recently configured E1 for ISDN but isdn is not showing establshed, its showing b/w TEI_ASSIGNED & AWAITING_ESTABLISHMENT. Ether wire is connected over E1. I am not sure where is the issue.

Router(config)#do sh isdn sta

ISDN Serial0/3/0:15 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: 0x800F7FFF
    Number of L2 Discards = 0, L2 Session ID = 183
    Total Allocated ISDN CCBs = 0

ISDN Serial0/3/0:15 interface
        dsl 1, interface ISDN Switchtype = primary-net5
    Layer 1 Status:
        ACTIVE
    Layer 2 Status:
        TEI = 0, Ces = 1, SAPI = 0, State = AWAITING_ESTABLISHMENT
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 1 CCBs = 0
    The Free Channel Mask: 0x800F7FFF
    Number of L2 Discards = 0, L2 Session ID = 182
    Total Allocated ISDN CCBs = 0

interface Serial0/3/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn incoming-voice voice

Shadi Shami · ‎02-10-2015

looks like the other side emulates user side, please try the following commands:

interface Serial0/3/0:15

shutdown

isdn protocol-emulate network

no shutdown

Thank you,

Shadi

View solution in original post

Shadi Shami · ‎02-10-2015

Hello,

The other side is Telco or another PBX?

Can you please send the following:

Controller config (sh run | sec controller e1 0/3/0)

Q921 debugs:

voice-port 0/3/0:15

shutdown

do debug isdn q921

no shutdown

Thank you,

Shadi

Anukalp S · ‎02-10-2015

Hello,

Another side is PBX. Pls see below logs & config.

Router#sh run | section E1 0/3/0
controller E1 0/3/0
framing NO-CRC4
pri-group timeslots 1-20

--------------------------------------------------------------------------------------------

836812: .Feb 10 19:57:00.668: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836813: .Feb 10 19:57:01.672: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836814: .Feb 10 19:57:01.800: ISDN Se0/3/0:15 Q921: L2_EstablishDataLink: sending SABME
836815: .Feb 10 19:57:01.800: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836816: .Feb 10 19:57:02.688: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836817: .Feb 10 19:57:02.800: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836818: .Feb 10 19:57:03.708: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836819: .Feb 10 19:57:03.800: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836820: .Feb 10 19:57:04.800: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836821: .Feb 10 19:57:05.728: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836822: .Feb 10 19:57:06.748: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836823: .Feb 10 19:57:07.768: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836824: .Feb 10 19:57:08.792: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836829: .Feb 10 19:57:10.801: ISDN Se0/3/0:15 Q921: L2_EstablishDataLink: sending SABME
836830: .Feb 10 19:57:10.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836831: .Feb 10 19:57:10.825: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836832: .Feb 10 19:57:11.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836833: .Feb 10 19:57:11.821: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836834: .Feb 10 19:57:12.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836835: .Feb 10 19:57:12.821: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836836: .Feb 10 19:57:13.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836837: .Feb 10 19:57:13.841: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836838: .Feb 10 19:57:15.861: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836839: .Feb 10 19:57:16.881: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836840: .Feb 10 19:57:17.881: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836841: .Feb 10 19:57:18.901: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836844: .Feb 10 19:57:19.801: ISDN Se0/3/0:15 Q921: L2_EstablishDataLink: sending SABME
836845: .Feb 10 19:57:19.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836846: .Feb 10 19:57:20.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836847: .Feb 10 19:57:20.933: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836848: .Feb 10 19:57:21.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836849: .Feb 10 19:57:21.949: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836850: .Feb 10 19:57:22.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836851: .Feb 10 19:57:22.965: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836852: .Feb 10 19:57:23.985: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836853: .Feb 10 19:57:26.013: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836854: .Feb 10 19:57:27.021: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836855: .Feb 10 19:57:28.041: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836856: .Feb 10 19:57:28.801: ISDN Se0/3/0:15 Q921: L2_EstablishDataLink: sending SABME
836857: .Feb 10 19:57:28.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0
836858: .Feb 10 19:57:29.057: ISDN Se0/3/0:15 Q921: User RX <- BAD FRAME(0x00017F)
836861: .Feb 10 19:57:29.801: ISDN Se0/3/0:15 Q921: User TX -> SABMEp sapi=0 tei=0

Shadi Shami · ‎02-10-2015

looks like the other side emulates user side, please try the following commands:

interface Serial0/3/0:15

shutdown

isdn protocol-emulate network

no shutdown

Thank you,

Shadi

isdn "awaiting establishment"