Configure Cisco 1720 for T1

Hi, I have an Adtran router 600R in place in one of our branch offices that is intermittently losing connectivity. I had a local computer store come out and test the cables, where they ended up replacing a couple of end connectors. Everything came back up and was fine on Friday...then Saturday I got the call that the network was down again. Since then, it has been up and gone down about 20 times.

I have a Cisco 1720 router here that I would like to configure and ship there for replacement (we have NO IT on staff at this office). Could someone help out a novice Cisco person configure this to accept a T1 signal?

The connection will pass thru this Cisco to a small 8-port switch where the connection is split - one off to a Juniper Router (DHCP server and Firewall) and the other to our phone system. So, I just need the CSU/DSU functionality of this device to accept the T1 signal - the Juniper cannot handle it.

Our ISP gateway is 216.221.125.153, service IP (Juniper) is 216.221.125.154/29.

I don't know much at all about Cisco as we generally try and steer clear of the equipment. However, I found this device in a bunch of rubble and I know it will work as a quick fix for right now.... if I can get the thing actually programmed.

I would really appreciate some help,
Thanks,\
Chris.
muckslushAsked:
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mikebernhardtCommented:
Have you got a T1 card in the router? I am assuming that it does. If not, you'll have to buy one.

Please post the output of
show version
show run
show controller T1
0
muckslushAuthor Commented:
Hi mikebernhardt, First of all thank you for your reply.

Before I continue, i should let you know that I researched how to set the router back to default so I did that a couple of nights ago, so it should have no configuration right now. I really appreciate any help you may offer. Attached is a picture of the T1 DSU/CSU card? on the back of the device so I believe this answers your first question.

Show Version:

Router>show version
Cisco Internetwork Operating System Software
IOS (tm) C1700 Software (C1700-Y-M), Version 12.0(4)T, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Wed 28-Apr-99 14:34 by kpma
Image text-base: 0x80008088, data-base: 0x805133AC
ROM: System Bootstrap, Version 12.0(3)T, RELEASE SOFTWARE (fc1)
Router uptime is 8 minutes
System restarted by power-on
System image file is "flash:c1700-y-mz.120-4.T"
cisco 1720 (MPC860) processor (revision 0x301) with 14746K/1638K bytes of memory
.
Processor board ID JAD040119HG (912859068), with hardware revision 0000
M860 processor: part number 0, mask 32
Bridging software.
X.25 software, Version 3.0.0.
1 FastEthernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
WIC T1-DSU
32K bytes of non-volatile configuration memory.
4096K bytes of processor board System flash (Read/Write)
Configuration register is 0x142

Show run:

Router>show run
^
% Invalid input detected at '^' marker.
Router>show run
^
% Invalid input detected at '^' marker.
Router>

Show controller T1:

Router>show controller T1
^
% Invalid input detected at '^' marker.
Router>

2010-04-20-21.44.45.jpg
0
mikebernhardtCommented:
You have to be in enable mode (i.e. superuser) to get the other information. with no config there will be no password:
router> enable
router#
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muckslushAuthor Commented:
OK, here it is... Doesn't look like the T1 command is working though.

Router>enable
Router#show run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router
!
!
ip subnet-zero
!
!
!
!
interface Serial0
no ip address
no ip directed-broadcast
shutdown
!
interface FastEthernet0
no ip address
no ip directed-broadcast
shutdown
!
ip classless
no ip http server
!
!
line con 0
transport input none
line aux 0
line vty 0 4
!
no scheduler allocate
end
Router#
Router#

Router>enable
Router#show controller T1
^
% Invalid input detected at '^' marker.
Router#
0
mikebernhardtCommented:
Try "show service-module"
0
muckslushAuthor Commented:
Show service-module:

Router#show service-module
Module type is T1/fractional
Hardware revision is 0.128, Software revision is 1.09,
Image checksum is 0xE4616EAD, Protocol revision is 0.1
Transmitter is sending remote alarm.
Receiver has loss of signal, loss of frame,
Framing is ESF, Line Code is B8ZS, Current clock source is line,
Fraction has 24 timeslots (64 Kbits/sec each), Net bandwidth is 1536 Kbits/sec.
Last module self-test (done at startup): Passed
Last clearing of alarm counters 03:32:07
loss of signal : 1, current duration 03:31:58
loss of frame : 1, current duration 03:31:58
AIS alarm : 0,
Remote alarm : 0,
Module access errors : 0,
Total Data (last 14 15 minute intervals):
3570 Line Code Violations, 0 Path Code Violations
3535 Slip Secs, 12600 Fr Loss Secs, 12600 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 12600 Unavail Secs
Data in current interval (107 seconds elapsed):
255 Line Code Violations, 0 Path Code Violations
32 Slip Secs, 107 Fr Loss Secs, 107 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 107 Unavail Secs
0
mikebernhardtCommented:
I'm pretty sure that you can just plug the T1 into it. But you will need to configure the serial interface and provide a route or 2:

interface serial 0
 ip address 192.168.0.1 255.255.255.0 [the ip address and mask of the serial link]
 no shutdown
interface fastethernet0
 ip address 192.168.1.1 255.255.255.0 [the ip address and mask that you want on the LAN interface]
 no shutdown

ip route 0.0.0.0 0.0.0.0 [the ip address of the next-hop to the internet
ip route [the nextwork and mask of the remote office] [the ip address of the other end of the serial link]
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muckslushAuthor Commented:
Sorry for the delayed response. I've been on vacation for several days. I will work with this information, so thank you for your help!!
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