[cisco-voip] ISDN Bad Frame

[Jason Aarons (US)]

One side needs to network side vs user side, also who's providing
clocking? Eg isdn protocol-emulate

 

http://www.cisco.com/en/US/docs/ios/12_1t/12_1t3/feature/guide/dt_q931.h
tml

 

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Mark Holloway
Sent: Friday, December 04, 2009 4:46 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] ISDN Bad Frame

 

I'm trying to get this lab ISDN configuration up and running but I am
having ISDN problems.  I have two 2811 routers each with a VWIC 2MFT-T1
and a T1 crossover cable connecting them.  They won't move from
TEI_ASSIGNED to MULTIPLE_FRAME_ESTABLISHED.  I know my T1 cable is good.


 

# debug isdn q921

 

Dec  4 20:57:58.250: ISDN Se0/0/0:23 Q921: User RX <- BAD
FRAME(0x00017F)

Dec  4 20:57:59.250: ISDN Se0/0/0:23 Q921: User RX <- BAD
FRAME(0x00017F)

Dec  4 20:58:00.250: ISDN Se0/0/0:23 Q921: User RX <- BAD
FRAME(0x00017F)

 

 

# show isdn status

 

Global ISDN Switchtype = primary-ni

 

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may
not apply

 

ISDN Serial0/0/0:23 interface

            dsl 0, interface ISDN Switchtype = primary-ni

            L2 Protocol = Q.921 0x0000  L3 Protocol(s) = CCM MANAGER
0x0003 

    Layer 1 Status:

            ACTIVE

    Layer 2 Status:

            TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED

 

 

# show run | sec controller

controller T1 0/0/0

 framing esf

 linecode b8zs

 cablelength short 133

 pri-group timeslots 1-3,24 service mgcp

 description PRI

 

# show run | sec Serial

interface Serial0/0/0:23

 description PRI

 no ip address

 encapsulation hdlc

 isdn switch-type primary-ni

 isdn incoming-voice voice

 isdn bind-l3 ccm-manager

 no cdp enable

 

 

The "PSTN" router

 

controller T1 0/0/0

 clock source internal

 cablelength short 133

 pri-group timeslots 1-3,24

 description PRI

 

interface Serial0/2/0:23

 description PRI

 no ip address

 encapsulation hdlc

 isdn switch-type primary-ni

 isdn incoming-voice voice

 isdn bchan-number-order ascending 

 no cdp enable

 

PSTN#deb isdn q921

debug isdn q921 is                  ON.

PSTN#term mon

PSTN#

Dec  4 21:54:51.090: ISDN Se0/0/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0

Dec  4 21:54:55.590: ISDN Se0/2/0:23 Q921: L2_EstablishDataLink: sending
SABME

Dec  4 21:54:55.590: ISDN Se0/2/0:23 Q921: User TX -> SABMEp sapi=0
tei=0

Dec  4 21:54:56.590: ISDN Se0/2/0:23 Q921: User TX -> SABMEp sapi=0
tei=0

Dec  4 21:54:57.090: ISDN Se0/0/0:23 Q921: L2_EstablishDataLink: sending
SABME

Dec  4 21:54:57.090: ISDN Se0/0/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0

Dec  4 21:54:57.590: ISDN Se0/2/0:23 Q921: User TX -> SABMEp sapi=0
tei=0

Dec  4 21:54:58.090: ISDN Se0/0/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0

 

 

 




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