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New Member

dialin and dialout on the same PRI

Dear all,

we want to configure a 3640 router with a dual e1-pri card to cover following tasks:

- dial-in (X.25) and protocol translation to TCP

- dial-out (protocol translation from TCP to X.25, routing to a dialer)

Unfortunately we have the problem that once dial-in works and once dial-out works but never the two at the same time.

As far as I understood there are several ways to configure dial-in and dial-out:

- dialer pools

- rotary groups

I tested both but none of them worked fine.

The best working was was to add the E1 interface to dialer-pool 1 and define a dialer which uses this pool.

Unfortunately when the E1 is added to a dialer pool the X.25 dial-in does not work anymore (call not accepted).

Please see at the end of the mail the output of "sh ver" and the config part used for dialling.

Any hints, help or sample config very appreciated.

Best regards,

Bernhard Roth

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3640-IS-M), Version 12.3(16a), RELEASE SOFTWARE (fc2)

Technical Support:

Copyright (c) 1986-2005 by cisco Systems, Inc.

Compiled Wed 09-Nov-05 21:49 by evmiller

Image text-base: 0x60008B00, data-base: 0x61BFA000

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

ROM: 3600 Software (C3640-IS-M), Version 12.3(16a), RELEASE SOFTWARE (fc2)

router uptime is 6 minutes

System returned to ROM by power-on

System restarted at 19:32:41 MEZ Mon Jan 23 2006

System image file is "flash:c3640-is-mz.123-16a.bin"

cisco 3640 (R4700) processor (revision 0x00) with 120832K/10240K bytes of memory.

Processor board ID 26877946

R4700 CPU at 100MHz, Implementation 33, Rev 1.0

MICA-6DM Firmware: CP ver 2950 - 9/9/2003, SP ver 2950 - 9/9/2003.

Channelized E1, Version 1.0.

Bridging software.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

Primary Rate ISDN software, Version 1.1.

1 FastEthernet/IEEE 802.3 interface(s)

60 Serial network interface(s)

60 terminal line(s)

2 Channelized E1/PRI port(s)

DRAM configuration is 64 bits wide with parity disabled.

125K bytes of non-volatile configuration memory.

24576K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

interface Serial1/0:15

description ISDN PRI D-Channel interface 0

no ip address

encapsulation x25 dce

dialer pool-member 1

isdn switch-type primary-net5

isdn incoming-voice modem

isdn disconnect-cause busy

no cdp enable

interface Dialer0

no ip address

encapsulation x25

dialer pool 1

dialer idle-timeout 30

dialer string 089555112

dialer max-call 1

dialer-group 1

no cdp enable

x25 routing

x25 route 987654321 interface Dialer0

translate tcp 10.xx.xx.xx port 1111 stream x25 987654321 quiet

New Member

Re: dialin and dialout on the same PRI

New Member

Re: dialin and dialout on the same PRI

Thank you, this worked but suddently I have another problem:

When an incoming X.25 connection is established and I do a pad call on any unknown address "pad 987654321" the router tries to connect this host via the dialed-in connection (the dialled-in device has no address). Any way to disable this?

Any connection attempt to an unknown X.121 address shall be rejected.

X.25 routing has to be switched on in order to let the protocol translations work correctly.

"x.25 route default clear" does not work, too.

Best regards,

Bernhard Roth

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