ISDN Setup

nickolaskimutai · ‎06-25-2008

I'm setting up a new ISDN link. The link thous the NT Box shows the line as active does not come up. I have checked with local telco and they've confirmed the line as being OK. The show isdn status output is as follow:

003R#show isdn status

ISDN BRI3/1 interface

dsl 25, interface ISDN Switchtype = basic-net3

Layer 1 Status:

DEACTIVATED

Layer 2 Status:

Layer 2 NOT Activated

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 25 CCBs = 0

The Free Channel Mask: 0x80000003

Number of L2 Discards = 0, L2 Session ID = 44

A sample debug output is as follows:

Mar 11 09:36:58.602 UTC: ISDN BR3/1: Outgoing call id = 0x8025, dsl 25

Mar 11 09:36:58.606 UTC: ISDN BR3/1: Event: Call to 27118835714 at 64 Kb/s

Mar 11 09:36:58.606 UTC: ISDN BR3/1: process_bri_call(): call id 0x8025, called_number 27118835714, speed 64, call ty

e DATA

Mar 11 09:36:58.606 UTC: CCBRI_Go Fr Host InPkgInfo (Len=26) :

Mar 11 09:36:58.606 UTC: 1 19 1 80 25 0 4 2 88 90 18 1 83 2C B 32 37 31 31 38 38 33 35 37 31 34

Mar 11 09:36:58.606 UTC:

Mar 11 09:36:58.606 UTC: CC_CHAN_GetIdleChanbri: dsl 25

Mar 11 09:36:58.606 UTC: Found idle channel B1

Mar 11 09:36:58.614 UTC: ISDN BR3/1: Activating

Mar 11 09:36:58.614 UTC: ISDN BR3/1 EVENT: isdn_sw_cstate: State = 4, Old State = 4.

Mar 11 09:37:00.614 UTC: ISDN BR3/1: Could not bring up interface

Mar 11 09:37:00.614 UTC: ISDN BR3/1: Shutting down ISDN Layer 3

Mar 11 09:37:00.614 UTC: ISDN BR3/1: LIF_EVENT: ces/callid 1/0x8025 HOST_DISCONNECT_ACK

Mar 11 09:37:00.618 UTC: ISDN BR3/1: Error: Unfound B-channel on Disconnect_Ack - callid 0x8025

Mar 11 09:37:00.618 UTC: ISDN BR3/1: Activating .

Mar 11 09:37:02.602 UTC: ISDN BR3/1: Outgoing call id = 0x8026, dsl 25

Mar 11 09:37:02.602 UTC: ISDN BR3/1: Event: Call to 27118835714 at 64 Kb/s

Mar 11 09:37:02.602 UTC: ISDN BR3/1: process_bri_call(): call id 0x8026, called_number 27118835714, speed 64, call ty

The link does not come up in all the layers. The NT box has been tested with a different working ISDN line and found to be OK. I will appreciate anyone who can assist pick out whta the issue could be. The configuration of the Bri3/1 is follows:

interface BRI3/1

ip address 192.168.1.13 255.255.255.0

no ip address

encapsulation ppp

no ip split-horizon

no ip mroute-cache

dialer wait-for-carrier-time 80

dialer map ip 192.168.1.12 name BRANCH_RTR broadcast 27118835714

dialer hold-queue 20

dialer-group 1

isdn switch-type basic-net3

isdn tei-negotiation first-call

no cdp enable

ppp authentication chap

Thanks you

rajput_p · ‎06-25-2008

Hi nickolas

first of pls check your router BRI card support the ISDN, Pls share the sh diag & sh ver report so that further can be check.

Regards

Pawan Rajput

njorosam · ‎06-25-2008

This is Sammy on behalf of Nicholas: The router has been used before to originate ISDN calls. Here's sh ver & sh diag:

003R#show ver

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3640-I-M), Version 12.2(7b), RELEASE SOFTWARE (fc1)

Compiled Mon 04-Mar-02 20:23 by pwade

Image text-base: 0x600089A8, data-base: 0x60A6A000

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

SCKE003R uptime is 1 week, 3 days, 22 hours, 23 minutes

System returned to ROM by power-on

System image file is "flash:c3640-i-mz.122-7b.bin"

cisco 3640 (R4700) processor (revision 0x00) with 45056K/4096K bytes of memory.

Processor board ID 27583135

R4700 CPU at 100Mhz, Implementation 33, Rev 1.0

Bridging software.

X.25 software, Version 3.0.0.

Basic Rate ISDN software, Version 1.1.

2 FastEthernet/IEEE 802.3 interface(s)

8 ISDN Basic Rate interface(s)

64 terminal line(s)

DRAM configuration is 64 bits wide with parity disabled.

125K bytes of non-volatile configuration memory.

16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

003R#show diag

Slot 1:

Async Port adapter, 32 ports

Port adapter is analyzed

Port adapter insertion time unknown

EEPROM contents at hardware discovery:

Hardware revision 0.1 Board revision H0

Serial number 28181831 Part number 800-02245-06

Test history 0x0 RMA number 00-00-00

EEPROM format version 1

EEPROM contents (hex):

0x20: 01 63 00 01 01 AE 05 47 50 08 C5 06 00 00 00 00

0x30: 88 00 00 00 02 05 07 00 FF FF FF FF FF FF FF FF

Slot 2:

Async Port adapter, 32 ports

Port adapter is analyzed

Port adapter insertion time unknown

EEPROM contents at hardware discovery:

Hardware revision 0.1 Board revision H0

Serial number 28182024 Part number 800-02245-06

Test history 0x0 RMA number 00-00-00

EEPROM format version 1

EEPROM contents (hex):

0x20: 01 63 00 01 01 AE 06 08 50 08 C5 06 00 00 00 00

0x30: 88 00 00 00 02 05 07 00 FF FF FF FF FF FF FF FF

Slot 3:

BRI (S/T) Port adapter, 8 ports

Port adapter is analyzed

Port adapter insertion time unknown

EEPROM contents at hardware discovery:

Hardware revision 1.0 Board revision E0

Serial number 28385664 Part number 800-01237-03

Test history 0x0 RMA number 00-00-00

EEPROM format version 1

EEPROM contents (hex):

0x20: 01 21 01 00 01 B1 21 80 50 04 D5 03 00 00 00 00

0x30: 70 00 00 00 02 05 30 17 FF FF FF FF FF FF FF FF

purohit_810 · ‎06-25-2008

Follow this link:

http://www.cisco.com/en/US/tech/tk801/tk379/technologies_tech_note09186a0080094b78.shtml

Check your physical connectivity and router's interface U, S, T std.

- Dharmesh

smothuku · ‎06-25-2008

Hi ,

Check the volatage of the line using multimeter.

Place the multimeter points on Pin 4 and 5 and check whether u r getting a voltage between 96 to 104V on the isdn line.

If u r not getting the voltage then check with telco.

Tks,

satish