Problem with Modem Connection

patricio.rodriguez · ‎12-21-2004

Hello,

I´m trying to use a modem to connect a serial interface (router 1721) through cell access. The problem is that I can establish connection sometimes and sometimes not. The debug messages, when I can not establish connection, are:

2d16h: Se0 DDR: disconnecting call

2d16h: Di1: No free dialer - starting fast idle timer.

2d16h: Di1: No free dialer - starting fast idle timer..

2d16h: Di1: No free dialer - starting fast idle timer

2d16h: Di1: No free dialer - starting fast idle timer..

2d16h: Di1: No free dialer - starting fast idle timer

2d16h: Se0 DDR: re-enable timeout

2d16h: Se0 DDR: rotor dialout [best] least recent failure is also most recent failure

2d16h: Se0 DDR: rotor dialout [best] also has most recent failure

2d16h: Se0 DDR: rotor dialout [best]

2d16h: Se0 DDR: Dialing cause ip (s=10.179.103.200, d=192.168.225.100)

2d16h: Se0 DDR: Attempting to dial #777

2d16h: CHAT1: Attempting async line dialer script

2d16h: CHAT1: Dialing using Modem script: dial & System script: none

2d16h: CHAT1: process started

2d16h: CHAT1: Asserting DTR

2d16h: CHAT1: Chat script dial started

2d16h: CHAT1: Chat script dial finished, status = Success..

2d16h: Se0 DDR: disconnecting call

2d16h: Di1: No free dialer - starting fast idle timer.

2d16h: Se0 DDR: re-enable timeout

The configuration in dialer interface is:

interface Dialer1

ip address negotiated

ip nat outside

encapsulation ppp

no ip route-cache

no ip mroute-cache

dialer pool 1

dialer remote-name pdsn

dialer idle-timeout 300

dialer string "#777" modem-script dial

dialer-group 1

no fair-queue

no cdp enable

ppp authentication chap callin

ppp chap hostname XXX

ppp chap password 0 XXX

I don´t know what else to do, please give me some advices.

Thanks.

icabrera · ‎12-21-2004

Hello, try to configure the command "dialer fast-idle X", the default of x is 20sec., you can configure 5 seconds for example.

Regards

patricio.rodriguez · ‎12-29-2004

Hello,

First of all thank you for your help, but it didn´t work. It was able to connect through the modem once but after that it hadn´t been able again. It´s really weird this behaviour because sometimes it can connected and sometimes not.

What else can I do??

icabrera · ‎01-04-2005

Hello, perhaps the modem doesn't disconnect properly, use the debug commands "debug modem" or similars, see the next url:

http://www.cisco.com/en/US/tech/tk801/tk36/technologies_configuration_example09186a00801d2576.shtml