10-16-2002 11:32 AM - edited 03-02-2019 02:07 AM
Hi,
I have a 3620 with the following hardware configuration:
Cisco Internetwork Operating System Software
IOS (tm) 3600 Software (C3620-IK9O3S-M), Version 12.2(8)T5, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Sun 23-Jun-02 22:08 by ccai
Image text-base: 0x60008930, data-base: 0x61670000
ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
racsca01 uptime is 5 days, 4 hours, 5 minutes
System returned to ROM by power-on
System image file is "flash:c3620-ik9o3s-mz.122-8.T5.bin"
cisco 3620 (R4700) processor (revision 0x81) with 60416K/5120K bytes of memory.
Processor board ID 26863746
R4700 CPU at 80Mhz, Implementation 33, Rev 1.0
MICA-6DM Firmware: CP ver 2730 - 5/23/2001, SP ver 2730 - 5/23/2001.
Channelized E1, Version 1.0.
Bridging software.
X.25 software, Version 3.0.0.
Primary Rate ISDN software, Version 1.1.
1 FastEthernet/IEEE 802.3 interface(s)
12 terminal line(s)
1 Channelized E1/PRI port(s)
DRAM configuration is 32 bits wide with parity disabled.
29K bytes of non-volatile configuration memory.
32768K bytes of processor board System flash (Read/Write)
Configuration register is 0x3922
The modem module is inserted in Slot 0 while the FE & E1 module is inserted in Slot 1
The router has the following config:
version 12.2
service nagle
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
!
hostname racsca01
!
boot system flash c3620-ik9o3s-mz.122-8.T5.bin
logging buffered 16384 debugging
aaa new-model
!
!
aaa authentication login default group tacacs+ local
aaa authentication ppp default group tacacs+
aaa authorization exec default group tacacs+
aaa authorization commands 15 default group tacacs+
aaa authorization network default group tacacs+
aaa accounting exec default start-stop group tacacs+
aaa accounting commands 15 default start-stop group tacacs+
aaa accounting network default start-stop group tacacs+
aaa session-id common
enable secret 5 xxxxxxxxxx
!
username victor.s password 7 xxxxxxxxx
clock timezone GMT-4 -4
modem country mica e1-default
ip subnet-zero
!
!
no ip domain-lookup
ip domain-name yyy.yyyy.yyy
!
no ip bootp server
ip audit notify log
ip audit po max-events 100
async-bootp dns-server 172.30.32.24
async-bootp nbns-server 172.30.32.29
!
!
!
!
!
!
!
!
fax interface-type fax-mail
mta receive maximum-recipients 0
!
controller E1 1/0
framing NO-CRC4
ds0-group 0 timeslots 1 type r2-digital r2-compelled ani
cas-custom 0
country venezuela use-defaults
!
!
!
!
interface FastEthernet1/0
description To ACS
ip address 172.30.32.17 255.255.254.0
duplex auto
speed auto
!
interface Group-Async1
no ip address
encapsulation ppp
dialer in-band
dialer idle-timeout 10
dialer-group 1
async mode dedicated
peer default ip address pool dialin
ppp callback accept
ppp authentication chap pap
group-range 1 12
!
ip local pool dialin 10.98.1.15 10.98.1.39
ip classless
ip route 0.0.0.0 0.0.0.0 172.30.32.1
no ip http server
ip pim bidir-enable
!
!
access-list 100 permit tcp any host 172.30.32.16 eq tacacs
dialer-list 1 protocol ip permit
!
tacacs-server host 172.30.32.16 key xxxxx
tacacs-server timeout 20
radius-server host 172.30.32.16 auth-port 1645 acct-port 1646 key 7 xxxxxxxxx
radius-server retransmit 3
radius-server key 7 xxxxxxxxx
call rsvp-sync
!
!
mgcp profile default
!
dial-peer cor custom
!
!
!
!
!
line con 0
speed 115200
line 1 12
modem Dialin
transport input all
flowcontrol hardware
line aux 0
line vty 0 4
transport input ssh
!
!
end
It will answer incoming calls but it will not give a modem tone, this is the result from a debug in this situation:
*Mar 6 00:13:01.505 GMT-4: Modem 0/3 Mica: configured for Answer mode, with Lower R2 signaling, 0x0 tone detection.
*Mar 6 00:13:01.505 GMT-4: TDM: Begin slot/port:channel 1/0:0 allocation for Modem use
*Mar 6 00:13:01.505 GMT-4: M32 AR - channel 0
*Mar 6 00:13:01.509 GMT-4: TDM: Enabling modem no 3
*Mar 6 00:13:01.509 GMT-4: TDM: No Errors in channel allocation for modem, rc is 0x0
End of slot/port:channel 1/0:0 allocation for Modem
*Mar 6 00:13:01.617 GMT-4: Modem 0/3 Mica: in modem state CALL_SETUP
*Mar 6 00:13:31.617 GMT-4: Modem 0/3 Mica: dialing number '#'
*Mar 6 00:13:31.621 GMT-4: TDM: Begin deletion of slot/port:channel 1/0:0 used by Modem
*Mar 6 00:13:31.621 GMT-4: TDM: Disabling modem no 3
*Mar 6 00:13:31.621 GMT-4: M32 AR for Modem - channel 0
*Mar 6 00:13:31.633 GMT-4: M32 AR for Modem - channel 0
*Mar 6 00:13:31.641 GMT-4: TDM: End of slot/port:channel 1/0:0 deletion
*Mar 6 00:13:31.661 GMT-4: Modem 0/3 Mica: in modem state TERMINATING
*Mar 6 00:13:31.681 GMT-4: Modem 0/3 Mica: in modem state IDLE
*Mar 6 00:13:31.681 GMT-4: TDM: Begin deletion of slot/port:channel 1/0:0 used by Modem
*Mar 6 00:13:31.681 GMT-4: TDM: Disabling modem no 3
*Mar 6 00:13:31.693 GMT-4: TDM: End of slot/port:channel 1/0:0 deletion
*Mar 6 00:13:31.697 GMT-4: Modem 0/3 Mica: DISCONNECT after 00:00:00, due to reason (0x7F00) Host Disconnect.
*Mar 6 00:13:31.697 GMT-4: %MODEM_HIST-3-END_CALL: Mica Modem 0/3
Connect Protocol - Unkn, Compression - Unkn, Connected Standard - Unkn
Tx/Rx bit rate - 0/0
Call Time - 00:00:00, Disconnect Reason (0x7F00) - Host Disconnect
0 retrains and/or speed shifts, 0 ec retransmissions requested
0 chars tx, 0 chars rx, 0 chars rx bad
0 ppp packets tx, 0 ppp packets rx, 0 ppp packets rx bad
0 ec packets tx, 0 ec packets rx, 0 ec packets rx bad
0 v110 packets tx, 0 v110 packets rx, 0 v110 packets rx bad, 0 v110 sync loss
Any ideas on what might be happening?.
Regards,
VS
10-30-2002 11:03 AM
Leo,
Thanks very much for your help.
Turns out the problem was due to a configuration parameter on the Siemens PBX. The PBX was expecting a dial-tone from the router trunk, the router was unable to provide it so the PBX kept dropping the calls.
After changing this, we were able to receive calls but had to change the IOS from 12.2(8)T5 to 12.2(6h) because callback was not working.
I will post to see if one can tune the digital modems to force that the upstream speed (in a callback case, from the RAS to the dial-up client) be higher than the downstream speed. I've been only to reach high speeds (>50kbps) without callback. Any tips?
BR,
VS
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