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3640 RAS: modems take 60seconds to accept another call

bwindle
Level 1
Level 1

I have a 3640 running 12.2(29) acting as a back-up RAS box, with an 8-port internal modem card. When a user disconnects from a modem, it takes exactly 60 seconds before that modem will accept another incoming call. I believe my modemcap is wrong. Can someone please advise what I need to change?

modem country microcom_hdms usa

!

modemcap entry bwmodemcap:MSC=AT&F&C1&D2S0=1H0

!

interface Group-Async1

ip unnumbered Ethernet0/0

encapsulation ppp

ip tcp header-compression

async mode interactive

peer default ip address pool dialup

ppp authentication pap

group-range 97 104

!

line 97 104

modem Dialin

modem autoconfigure type bwmodemcap

transport input all

autoselect during-login

autoselect ppp

stopbits 1

flowcontrol hardware

Here is the debug output when a user hangs-up:

6d23h: Modem 3/4 Mcom: in modem state 'Disconnecting'

6d23h: Modem 3/4 Mcom: DISCONNECT, duration = 00:03:12, reason (0xE) Remote Link Disc

6d23h: TTY101: DSR was dropped

6d23h: tty101: Modem: READY->HANGUP

6d23h: TTY101: dropping DTR, hanging up

6d23h: TTY101: Async Int reset: Dropping DTR

6d23h: tty101: Modem: HANGUP->IDLE

6d23h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async101, changed state to down

6d23h: TTY101: cleanup pending. Delaying DTR

6d23h: TTY101: cleanup pending. Delaying DTR

6d23h: Modem 3/4 Mcom: in modem state 'Idle'

6d23h: %LINK-5-CHANGED: Interface Async101, changed state to reset

6d23h: TTY101: cleanup pending. Delaying DTR

6d23h: TTY101: cleanup pending. Delaying DTR

6d23h: TTY101: cleanup pending. Delaying DTR

6d23h: TTY101: cleanup pending. Delaying DTR

6d23h: TTY101: cleanup pending. Delaying DTR

6d23h: TTY101: cleanup pending. Delaying DTR

6d23h: Modem 3/4 Mcom: switching to character mode

6d23h: TTY101: no timer type 0 to destroy

6d23h: TTY101: no timer type 1 to destroy

6d23h: TTY101: no timer type 3 to destroy

6d23h: TTY101: no timer type 4 to destroy

6d23h: TTY101: destroy timer type 10

6d23h: TTY101: no timer type 2 to destroy

6d23h: Async101: allowing modem_process to continue hangup

6d23h: TTY101: restoring DTR

6d23h: TTY101: autoconfigure probe started

6d23h: TTY101: Modem command: --ATAT&F&C1&D2S0=1H0--

6d23h: %LINK-3-UPDOWN: Interface Async101, changed state to down

6d23h: Modem 3/4 Mcom: in modem state 'Dialing/Answering'

6d23h: Modem 3/4 Mcom: in modem state 'Waiting for Carrier'

6d23h: TTY101: Modem configuration succeeded

6d23h: TTY101: Detected modem speed 9600

6d23h: TTY101: Done with modem configuration

6d23h: Modem 3/4 Mcom: in modem state 'Disconnecting'

6d23h: Modem 3/4 Mcom: DISCONNECT, duration = 00:00:00, reason (0x2) No carrier

6d23h: Modem 3/4 Mcom: in modem state 'Idle'

1 Reply 1

Hello,

try to change the D2 to D3 in your modemcap entry:

modemcap entry bwmodemcap:MSC=AT&F&C1&D3S0=1H0

AT Command Set and Register Summary for Cisco

http://www.cisco.com/en/US/partner/products/hw/univgate/ps501/prod_command_reference09186a00800a97c9.html#3841

Regards,

GP