Thanks for your reply. With lots of help, we eventually found out how to mix voice and dial-up acceptably.
The approach involved setting up resource-pool elements.
Group resource definitions contain range port statements; these can be referenced by profile customer definitions that also bind dialer dnis entries, thereby linking a range of ports with specific called party telephone numbers.
Lastly, an Async Group is created with port-range identical to the ports in the resource-pool group resource (data). The Async group has the necessary IOS configuration commands for correct setup of modem ports.
The net result is that when calls are received, the calling party number in the Q.931 setup message can be matched with a dnis group. If the dnis group matches the access number list for dial-up users, then the call will land in the range of ports configured for modem/data calls. If the called party number matches one of the dnis groups keyed to the voice resource entries, it will land on one of the ports that has (effectively) no special config, no authorization setup, etc., i.e., those ports considered 'voice' ports in the arrangement, and hopefully also matching a dial peer that can correctly set up call legs or route the call as otherwise required.
Here are selections from a working example (AS5400 configured as PSTN Gateway & Dial-up RAS)
NOTE: IT IS CRITICAL TO LEAVE SOME PORTS UN-ASSIGNED so that a group of ports is free for outbound pots calls... (if you want to do outbound calling). Otherwise no dsp resource errors result. In this example, 3/96 3/107 are not referenced by any aggregation entity.... These are free ports and end up in the default group. They can be selected for outbound calls (as this is a PSTN gateway config).
resource-pool enable
!
resource-pool group resource data
! description data ports are for dial up (modem calls).
range port 2/0 2/47
!
resource-pool group resource office
! ports for inbound voice (1 of 2)
range port 2/48 2/107
!
resource-pool group resource fax
range port 3/0 3/5
!
resource-pool group resource nulldnis
! additional ports for voice (2 of 2)
! utilized where 2 calls legs are needed and require 2 ports per call. Does not map to any dnis group.
range port 3/6 3/95
!
resource-pool profile customer data
limit base-size all
limit overflow-size 0
! bind group resource data, defined above
resource data speech
! bind dnis group data, defined below
dnis group data
!
resource-pool profile customer office
limit base-size all
limit overflow-size 0
resource office speech
dnis group office
!
resource-pool profile customer fax
limit base-size all
limit overflow-size 0
resource fax speech service fax
dnis group fax
!
resource-pool profile customer nulldnis
limit base-size all
limit overflow-size 0
resource nulldnis speech service nulldnis
dnis group default
!
resource-pool profile service fax
!
resource-pool profile service nulldnis
!
resource-pool profile service office
dialer dnis group data
! put ranges, or number commands here to specify
! called party numbers for dial-up access here.
! imaginary RAS 10K NNX with 'hole' for voice numbers between last 4 of 1000-1999
number 4004000xxx
number 4004002xxx
number 4004003xxx
! etc..
!
dialer dnis group office
range 4004001000 4004001998
!
dialer dnis group fax
number 4004001999
interface Group-Async1
bandwidth 56
ip unnumbered FastEthernet0/0
encapsulation ppp
no ip mroute-cache
timeout absolute 86400 0
dialer in-band
dialer idle-timeout 1800
dialer-group 1
async mode interactive
peer default ip address pool nas-ip-pool
no keepalive
ppp max-bad-auth 4
ppp authentication pap callin
ppp authorization chap
ppp multilink
ppp timeout retry 5
group-range 2/00 2/47
!
