[cisco-voip] AS5300 PRI ISDN voice call problem

Juan Pablo Romero (IFX AR) jpablo.romero at ifxnw.com.ar
Wed Feb 9 11:21:02 EST 2005


Paul,
	Apart from creating a pots dial-peer with DID, you should also
try the following config at your voice-ports:

voice-port 0:D
  bearer-cap 3100Hz

	Give that a try and let me know if any problem.

JP

Juan Pablo Romero
IFX Networks


-----Mensaje original-----
De: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] En nombre de Paul Gani
Enviado el: Wednesday, February 09, 2005 12:42 PM
Para: cisco-voip at puck.nether.net
Asunto: [cisco-voip] AS5300 PRI ISDN voice call problem

I have an AS5300 running:

System image file is "flash:c5300-is-mz.123-12.bin"
4 Channelized T1/PRI port(s)
48 DSP(s), 48 Voice resource(s)

Slots 1 and 2 have identical VFCs:
      VCWare Version     :  11.41
      ROM Monitor Version:  1.3
      DSPWare Version    :  4.1.41
      Technology         :  C542
VCWare/DSPWare version compatibility OK

I have one of the T1s hooked up to an Excel voice switch.  My goal is to

receive voice calls from the switch via the T1 PRI, and send them out
VoIP 
to another device.

I believe the PRI signaling is set up correctly.  A "sh isdn status"
gives
me "MULTIPLE_FRAME_ESTABLISHED" and a "debug isdn Q921" gives me
regular:

Feb  9 14:00:13: ISDN Se0:23 Q921: User TX -> RRp sapi=0 tei=0 nr=3
Feb  9 14:00:13: ISDN Se0:23 Q921: User RX <- RRp sapi=0 tei=0 nr=4

messages.  Also, a "sh isdn service" gives me:

PRI Channel Statistics:
ISDN Se0:23, Channel [1-24]
   Configured Isdn Interface (dsl) 0
    Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart
5=Maint_Pend)
     Channel :  1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4
     State   :  0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
    Service State (0=Inservice 1=Maint 2=Outofservice 8=MaintPend
9=OOSPend)
     Channel :  1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4
     State   :  0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2

Unfortunately, test calls appear to fail.  Here is an example with
"debug
isdn Q931":

Feb  9 14:33:31: ISDN Se0:23 Q931: RX <- SETUP pd = 8  callref = 0x0019
         Bearer Capability i = 0x8090A2
                 Standard = CCITT
                 Transfer Capability = Speech
                 Transfer Mode = Circuit
                 Transfer Rate = 64 kbit/s
         Channel ID i = 0xA98381
                 Exclusive, Channel 1
         Net Specific Fac i = 0x04A1323838E3
         Calling Party Number i = 0x2080, '301497xxxx'
                 Plan:Unknown, Type:National
         Called Party Number i = 0xC0, '4231301318xxxx'
                 Plan:Unknown, Type:Subscriber(local)
Feb  9 14:33:31: ISDN Se0:23 **ERROR**: accept_incoming_csm_call: modem
problem Requested circuit/channel not available(0x2C): b channel 0, call

id 0x3
Feb  9 14:33:31: ISDN Se0:23 Q931: TX -> CALL_PROC pd = 8  callref =
0x8019
         Channel ID i = 0xA98381
                 Exclusive, Channel 1
Feb  9 14:33:31: ISDN Se0:23 Q931: TX -> DISCONNECT pd = 8  callref =
0x8019
         Cause i = 0x80AC - Requested circuit/channel not available
Feb  9 14:33:31: ISDN Se0:23 Q931: RX <- RELEASE pd = 8  callref =
0x0019
Feb  9 14:33:31: ISDN Se0:23 Q931: TX -> RELEASE_COMP pd = 8  callref =
0x8019

I can't figure out why I'm getting the "**ERROR**:
accept_incoming_csm_call: modem problem".

My IOS is configured as such:

version 12.3
!
logging buffered 65535 debugging
!
resource-pool disable
!
isdn switch-type primary-5ess
!
voice rtp send-recv
!
voice class codec 1
  codec preference 1 g729r8 bytes 40
  codec preference 2 g723r63 bytes 48
!
fax interface-type fax-mail
!
controller T1 0
  framing esf
  clock source line primary
  linecode b8zs
  cablelength short 133
  pri-group timeslots 1-24
!
controller T1 1
  framing sf
  clock source line secondary 1
  linecode ami
  cablelength short 133
  ds0-group 1 timeslots 1-24 type e&m-fgb mf dnis
!
controller T1 2
  framing esf
  clock source line secondary 2
  linecode b8zs
  ds0-group 2 timeslots 1-24 type e&m-fgb mf dnis
  description *** apollo 4 unicall ***
!
controller T1 3
  shutdown
  framing sf
  clock source line secondary 3
  linecode ami
  ds0-group 3 timeslots 1-24 type e&m-fgb mf dnis
!
interface Ethernet0
  no ip address
  no ip route-cache
  no ip mroute-cache
  shutdown
!
interface Serial0
  no ip address
  no ip route-cache
  no ip mroute-cache
  shutdown
  clockrate 2015232
  no fair-queue
!
interface Serial1
  no ip address
  no ip route-cache
  no ip mroute-cache
  shutdown
  clockrate 2015232
  no fair-queue
!
interface Serial2
  no ip address
  no ip route-cache
  no ip mroute-cache
  shutdown
  clockrate 2015232
  no fair-queue
!
interface Serial3
  no ip address
  no ip route-cache
  no ip mroute-cache
  shutdown
  clockrate 2015232
  no fair-queue
!
interface Serial0:23
  no ip address
  isdn switch-type primary-5ess
  isdn incoming-voice modem
  no isdn outgoing ie redirecting-number
  no isdn incoming alerting add-PI
  no cdp enable
!
interface FastEthernet0
  ip address XXX...
  no ip route-cache
  no ip mroute-cache
  duplex auto
  speed auto
  no cdp enable
  h323-gateway voip interface
  h323-gateway voip bind srcaddr XXX...
!
ip classless
ip route 0.0.0.0 0.0.0.0 XXX...
no ip http server
!
voice-port 1:1
  echo-cancel coverage 16
!
voice-port 2:2
  echo-cancel coverage 16
!
voice-port 3:3
  echo-cancel coverage 16
!
voice-port 0:D
!
dial-peer voice 20805 voip
  destination-pattern 423T
  session target ipv4:XXX...
  tech-prefix 423
  codec g729br8
!
gateway
!
end

Any help would be appreciated.  Please note, I have already tried this:

AS5300T1#config t
Enter configuration commands, one per line.  End with CNTL/Z.
AS5300T1(config)#interface Serial0:23
AS5300T1(config-if)#isdn incoming-voice voice
                                         ^
% Invalid input detected at '^' marker.

AS5300T1(config-if)#isdn incoming-voice ?
   data   Incoming voice calls will be handled as data.
   modem  Incoming voice calls will be handled as modems.

AS5300T1(config-if)#isdn incoming-voice

but as you can see, "voice" is not an available option.

My boss thinks the ISDN might be fine, and I have a dial-peer problem,
but 
a packet sniff shows no outgoing ethernet packets during a test call, so
I 
don't think it is even getting to the dial-peer part.

Thanks,
Paul Gani
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