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sk
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splitting isdn bri channels

i have a normal 64 k isdn bri line at my office.as i have B channels available

i WOULD LIKE TO USE ONE B channel for dialin and other for dialout.

is this possible and if yes could i have a sample config

1 REPLY

Re: splitting isdn bri channels

for dial out, you need a dial string added to it. For dial in on the other channel, there is no special config needed.

int bri 0/0

encapsulation ppp - optional

ip add <

dialer string ----for dialout

dialer-group 1---- needed for Layer 3 protocols

isdn spid1 -- optional

isdn spid2 -- optional

config)#dialer-list 1 protocol ip permit

I have provided a sample output. R2, R3, R4 are 3 routers. with one BRI port on each.

R2 has phone numbers 2001 and 2002 on each channel.

R3 has phone numbers 3001 and 3002 on each channel.

R4 has phone numbers 4001 and 4002 on each channel.

R2 has the sample config that i have mentioned above.

R3 calls R2 on 2001, while R2 calls R4 on 4001. Here is the output of the active isdn calls.

R2#sh isdn active

--------------------------------------------------------------------------------

ISDN ACTIVE CALLS

--------------------------------------------------------------------------------

History table has a maximum of 100 entries.

History table data is retained for a maximum of 15 Minutes.

--------------------------------------------------------------------------------

Call Calling or Called Remote Seconds Seconds Seconds Recorded Charges

Type Phone number Node Name Used Left Idle Units/Currency

--------------------------------------------------------------------------------

In 3001 89 30 89

Out 4001 26 93 26 0

--------------------------------------------------------------------------------

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