[cisco-nas] as5300 - modem fails to handshake

[Rodney Kreisler]

AS5300
IOS 12.3(15)
modem version 2.9.5.0

Only used for incoming dial up

We have 3 ISDN/PRI incoming configured in nfas group.  When the first T 
reaches 23 lines in use and the calls roll over to the next T, the call 
is assigned to a modem, but the modem does NOT initiate handshake sequence.

I know a debug on a bad call would help, unfortunately the create that 
sequence of events is problematic.  If the opportunity arises I will 
post that info as well.

If anyone has any ideas, please let me know.

#show ver
Cisco Internetwork Operating System Software
IOS (tm) 5300 Software (C5300-JS-M), Version 12.3(15), RELEASE SOFTWARE 
(fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2005 by cisco Systems, Inc.
Compiled Tue 24-May-05 16:02 by ssearch
Image text-base: 0x60008AEC, data-base: 0x618DA000

ROM: System Bootstrap, Version 11.2(19970724:081727) 
[INT-janeiro.weekly.0.5.0 101], INTERIM SOFTWARE
BOOTLDR: 5300 Software (C5300-BOOT-M), Version 12.3(15), RELEASE 
SOFTWARE (fc3)

c5300-2 uptime is 4 days, 18 hours, 26 minutes
System returned to ROM by reload at 13:08:23 UTC Thu Jul 7 2005
System image file is "flash:c5300-js-mz.123-15.bin"

cisco AS5300 (R4K) processor (revision A.22) with 131072K/16384K bytes 
of memory.
Processor board ID 06465466
R4700 CPU at 150MHz, Implementation 33, Rev 1.0, 512KB L2 Cache
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
Primary Rate ISDN software, Version 1.1.
Backplane revision 2
Manufacture Cookie Info:
 EEPROM Type 0x0001, EEPROM Version 0x01, Board ID 0x30,
 Board Hardware Version 1.0, Item Number 73-2414-03,
 Board Revision A0, Serial Number 06465466,
 PLD/ISP Version <unset>,  Manufacture Date 23-Oct-1997.
1 Ethernet/IEEE 802.3 interface(s)
1 FastEthernet/IEEE 802.3 interface(s)
76 Serial network interface(s)
192 terminal line(s)
8 Channelized T1/PRI port(s)
128K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
8192K bytes of processor board Boot flash (Read/Write)

Configuration register is 0x2102

#show run
Building configuration...

Current configuration : 3490 bytes
!
version 12.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname c5300-2
!
boot-start-marker
boot-end-marker
!
enable secret 5 ***
!
spe 1/0 1/7
 firmware location system:/ucode/mica_port_firmware
spe 2/0 2/7
 firmware location system:/ucode/mica_port_firmware
!
!
resource-pool disable
!
aaa new-model
aaa session-mib disconnect
!
!
aaa authentication login default group radius local
aaa authentication login console none
aaa authentication ppp default group radius local
aaa authorization network default group radius local
aaa accounting exec default start-stop group radius
aaa accounting connection default start-stop group radius
aaa accounting system default start-stop group radius
aaa session-id common
ip subnet-zero
ip domain name ***.com
ip name-server *.*.*.*
ip name-server *.*.*.*
!
async-bootp dns-server *.*.*.* *.*.*.*
!
isdn switch-type primary-ni
!
!
controller T1 0
 framing esf
 clock source line primary
 linecode b8zs
 pri-group timeslots 1-24 nfas_d primary nfas_int 0 nfas_group 1
!
controller T1 1
 framing esf
 clock source line secondary 1
 linecode b8zs
 pri-group timeslots 1-24 nfas_d none nfas_int 2 nfas_group 1
!
controller T1 2
 framing esf
 clock source line secondary 2
 linecode b8zs
 pri-group timeslots 1-24 nfas_d backup nfas_int 1 nfas_group 1
!
controller T1 3
 framing sf
 clock source line secondary 3
 linecode ami
!
controller T1 4
 framing sf
 clock source line secondary 4
 linecode ami
!
controller T1 5
 framing sf
 clock source line secondary 5
 linecode ami
!
controller T1 6
 framing sf
 clock source line secondary 6
 linecode ami
!
controller T1 7
 framing sf
 clock source line secondary 7
 linecode ami
!
!
interface Ethernet0
 ip address *.*.*.* *.*.*.*
!
interface Serial0
 no ip address
 no ip route-cache
 shutdown
 clock rate 2015232
 no fair-queue
!
interface Serial1
 no ip address
 no ip route-cache
 shutdown
 clock rate 2015232
 no fair-queue
!
interface Serial2
 no ip address
 no ip route-cache
 shutdown
 clock rate 2015232
 no fair-queue
!
interface Serial3
 no ip address
 no ip route-cache
 shutdown
 clock rate 2015232
 no fair-queue
!
interface Serial0:23
 ip unnumbered Ethernet0
 encapsulation ppp
 ip tcp header-compression passive
 isdn switch-type primary-ni
 isdn incoming-voice modem
 peer default ip address pool setup_pool setup_pool2
 ppp authentication pap
!
interface FastEthernet0
 no ip address
 no ip route-cache
 shutdown
 duplex full
 speed auto
!
interface Group-Async1
 ip unnumbered Ethernet0
 encapsulation ppp
 ip tcp header-compression
 async mode interactive
 peer default ip address pool setup_pool setup_pool2
 ppp authentication pap
 group-range 1 192
!
ip local pool setup_pool *.*.*.* *.*.*.*
ip local pool setup_pool2 *.*.*.* *.*.*.*
ip default-gateway *.*.*.*
ip classless
ip route 0.0.0.0 0.0.0.0 *.*.*.*
ip http server
!
!
!
!
!
radius-server host *.*.*.* auth-port 1645 acct-port 1646
radius-server directed-request
radius-server key *****
!
!
!
!
line con 0
 logging synchronous
 transport output all
line 1 192
 modem InOut
 transport input all
 autoselect during-login
 autoselect ppp
line aux 0
 transport output all
line vty 0 4
 transport input all
 transport output all
!
end