[cisco-nas] ISDN call problem

[Mark Johnson]

At 01:57 PM 9/16/2004 +0300, Rivo Tahina RAZAFINDRATSIFA wrote:
>Hi all,
>
>I have an AS5350 Nas and have the following problem,
>
>analog modem can login but isdn can't.

I suspect there is an autoselect problem.

I would suggest you explicitly configure the interface for PPP
encapsulation, and autoselect for V.120 (assuming you need this
for V.120 remote devices that will not signal the call as a
V.120 call).  So:

interface Serial3/0:15
  ip unnumbered FastEthernet0/0
  no keepalive
  dialer idle-timeout 900
  dialer-group 1
  autodetect encapsulation v120
  no snmp trap link-status
  isdn switch-type primary-net5
  isdn incoming-voice modem
  no fair-queue
  no cdp enable
  ppp multilink                  ! if desired
  ppp authentication chap        ! or pap

There's really no need to use a dialer rotary group, unless you have
numerous PRI's that you want to configured similarly.  Otherwise,
everything can go under the physical PRI interface.

mark


>This is part of the configuration, can anyone tell what I am missing?
>
>!
>hostname as8E1
>!
>aaa authentication username-prompt login:
>aaa authentication login default local group radius
>aaa authentication login console local line
>aaa authentication ppp default if-needed local group radius
>aaa authentication ppp sync none
>aaa authorization network default group radius
>aaa authorization network sync none
>!!!
>interface Serial3/0:15
>  ip unnumbered FastEthernet0/0
>  no keepalive
>  dialer rotary-group 1
>  dialer-group 1
>  autodetect encapsulation ppp v120
>  no snmp trap link-status
>  isdn switch-type primary-net5
>  isdn incoming-voice modem
>  no fair-queue
>  no cdp enable
>!!!
>interface Group-Async1
>  ip unnumbered FastEthernet0/0
>  encapsulation ppp
>  async mode interactive
>  no snmp trap link-status
>  peer default ip address pool default
>  no fair-queue
>  ppp max-bad-auth 5
>  ppp authentication pap chap
>  group-range 1/00 2/17
>!!!
>interface Dialer1
>  ip unnumbered FastEthernet0/0
>  dialer in-band
>  dialer idle-timeout 900
>  dialer-group 1
>  no fair-queue
>  no cdp enable