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New Member

isdn x25 d channel on x25 b channel


I`ve got a problem in my company

we would like to migrate the eft-pos (electronic file transfair) terminals, witch runs x25 d-channel

directly to isdn b-channel (cisco router 3745) without a terminal adamter

In the old networks, the eft-pos terminals works with isdn d-channal to a isdn b-channel terminal adapter, witch is connected to a x25 switch

I`ve configured my router as follow

interface BRI1/1

no ip address

encapsulation x25

no ip mroute-cache

isdn switch-type basic-net3

x25 htc 5

isdn incoming-voice modem

for my testscenario I also have configured a terminal adapter with isdn d-channel witch is connected to a labtop and simulates a eftpos-terminal. this part works well!

the problem is, I can not make a connection to my routers b-channel !

can the router thake the work of a terminal adapter ?

have you got a configurations example ?




Re: isdn x25 d channel on x25 b channel

The router with a ISDN BRI port has a terminal Adapter built-in .See whether the following link can help you in configuring the X.25 network .

New Member

Re: isdn x25 d channel on x25 b channel

thank`s for your answer

but I think my problem is in the isdn layer !

when I connect with the Terminal Adapter to the router, the following message appears

*Mar 1 00:04:03.143: ISDN BR1/1 Q931: SETUP pd = 8 callref = 0x01

Bearer Capability i = 0x88C0C6E6

Standard = CCITT

Transer Capability = Unrestricted Digital

Transfer Mode = Packet

Transfer Rate = Packet - not specified

Channel ID i = 0x89

Called Party Number i = 0xC1, '9140300'

Plan:ISDN, Type:Subscriber(local)

*Mar 1 00:04:03.143: ISDN BR1/1 Q921: User TX -> INFO sapi=0 tei=92, ns=0 nr=0

*Mar 1 00:04:03.143: ISDN BR1/1 Q931: RELEASE_COMP pd = 8 callref = 0x81

Cause i = 0x80D8 - Incompatible destination

thanks for your help