Re: isdn question-arguing with telco

h.wall · ‎06-22-2006

I ahve a 3700 with isdn bri card. I have 63 with the same config and they all work except this one site. My debugs which are shown below appear to me to be a telco issue. My telco tells me it is the hardware. I have repolaced the rj-45 to the jack- the bri card and moved the slot the card is in. still same message and the telco again tells me it is hardware. Can anyone help me by looking at the debug and the isdn status and let me know what they think. The debug is isdn q921 and isdn events. Thanks in advance.

RTR#sho isdn stat

Global ISDN Switchtype = basic-ni

ISDN BRI1/0 interface

dsl 8, interface ISDN Switchtype = basic-ni

Layer 1 Status:

DEACTIVATED

Layer 2 Status:

Layer 2 NOT Activated

TEI Not Assigned, ces = 1, state = 1(terminal down)

spid1 configured, spid1 NOT sent, spid1 NOT valid

TEI Not Assigned, ces = 2, state = 1(terminal down)

spid2 configured, spid2 NOT sent, spid2 NOT valid

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 8 CCBs = 0

The Free Channel Mask: 0x00000000

Total Allocated ISDN CCBs = 0

RTR#

Jun 22 16:25:03: ISDN BR1/0 EVENT: service_queue_from_physical_layer: Recvd L1 0

Jun 22 16:25:03: ISDN BR1/0 EVENT: isdn_sw_cstate: State = 0, Old State = 4

Jun 22 16:25:03: ISDN BR1/0 EVENT: process_rxstate: ces/callid 1/0x83FC calltypK

Jun 22 16:25:03: ISDN BR1/0 **ERROR**: host_disconnect_ack: Unfound B-channel oC

Jun 22 16:25:06: ISDN BR1/0 EVENT: isdn_layer1_failure: Layer 1 not active eveny

Jun 22 16:25:06: ISDN BR1/0 EVENT: isdn_sw_cstate: State = 0, Old State = 4

Jun 22 16:25:08: ISDN BR1/0 EVENT: UserIdle: callid 0x83FD received ISDN_CALL ()

Jun 22 16:25:08: ISDN BR1/0 EVENT: handle_l2d_srq_mail: Activating Layer 1

Jun 22 16:25:08: ISDN BR1/0 EVENT: isdn_sw_cstate: State = 4, Old State = 4

Jun 22 16:25:16: ISDN BR1/0 EVENT: isdn_layer1_failure: Layer 1 not active eveny

Jun 22 16:25:16: ISDN BR1/0 EVENT: isdn_sw_cstate: State = 0, Old State = 4

Jun 22 16:25:16: ISDN BR1/0 EVENT: process_rxstate: ces/callid 1/0x83FD calltypK

Jun 22 16:25:16: ISDN BR1/0 **ERROR**: host_disconnect_ack: Unfound B-channel oD

Jun 22 16:25:18: ISDN BR1/0 EVENT: UserIdle: callid 0x83FE received ISDN_CALL ()

Jun 22 16:25:18: ISDN BR1/0 EVENT: handle_l2d_srq_mail: Activating Layer 1

pciaccio · ‎06-23-2006

No matter what has been said you have a layer 1 issue. Most likely it is a cabling problem. Do you require an external NT-1 unit to be between the carrier and the router? Do a show controller for the BRI card and see if it has a built in NT-1 or you need to supply one. Other then that and the cabling if it is still bad then you may have a faulty BRI card...

tushar.78 · ‎06-23-2006

Thats absolutely right ... its clear that u r having a L1 issue which indicates that its a local cable problem. Check the voltage on the isdn pair, replace with a new NT box or else check the BRI card.