[cisco-nas] ISDN Disconnects

[Dennis Peng]

Hi David,

Could you open up a TAC case for this issue? I had one of our VOIP
experts take a look and this should work, but we'd need to get some
debugs and do some analysis. A TAC case would be the best way to
address this. Thanks.

Dennis

David A. Lauer [dalauer at tristarcorp.net] wrote:
> I'm having a problem that I believe is ISDN related.
> 
> I have a Cisco 5350 IOS v12.2.13(T5) with eight ISDN interfaces.  I have
> NFAS setup on fourbi-directional ISDN T1s.
> 
> I'm trying to setup a service called ring-too, where we accept our
> customers toll free number in on these Ts and then send it back out to
> their "ring-too" number (their local offices phone number).
> 
> The flow should be something like this;
> 
> 1. Toll Free number comes inbound through a POTS (TDM inbound)
> dial-peer.  This is a direct-inward dial dial-peer
> 
> 2. The call is then routed out to a Gatekeeper through a VOIP (IP
> outbound) dial peer to determine the best GW to use for this route.
> 
>         NOTE: This GK is located offnet and was setup in proxy mode
>               It is now in routed mode.  It is based on GnuGK
> 
> 3. Because this gateway is the best route for the destination number 
> the gatekeeper sends the call back and is accepted via a VOIP (IP
> inbound) dial peer.
> 
> 4. lastly  there is a outbound POTS dial peer to  send the call to my
> carrier, back out an available DS0 in the NFAS group.
> 
> It looks like if I have a session open and another call comes in, the
> first call will get clobbered (disconnected).  I see errors like this in
> my debugs;
> 
>         Restart Indicator i = 0x80
> 
>         H225_EVENT_RELEASE
> 
>         cch323_h225_send_release: Cause = 41
> 
>         Cause i = 0x809B - Destination out of order
> 
> ******************** Config sections **************************
> 
> isdn switch-type primary-4ess
> !
> voice service voip 
>  fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback cisco
> ! added because of incompatibility with carriers ISDN
>  h323     
>   h245 caps mode restricted
> !         
> controller T1 3/0
>  framing esf
>  linecode b8zs
>  pri-group timeslots 1-24 nfas_d primary nfas_int 0 nfas_group 1
>  no yellow generation
>  no yellow detection
> !         
> controller T1 3/1
>  framing esf
>  linecode b8zs
>  pri-group timeslots 1-24 nfas_d backup nfas_int 1 nfas_group 1
>  no yellow generation
>  no yellow detection
> !         
> controller T1 3/2
>  framing esf
>  linecode b8zs
>  cablelength short 133
>  pri-group timeslots 1-24 nfas_d none nfas_int 2 nfas_group 1
>  no yellow generation
>  no yellow detection
> !         
> controller T1 3/3
>  framing esf
>  linecode b8zs
>  cablelength short 133
>  pri-group timeslots 1-24 nfas_d none nfas_int 3 nfas_group 1
>  no yellow generation
>  no yellow detection
> !
> interface FastEthernet0/0
>  ip address <removed>
>  ip access-group 100 in
>  duplex full
>  speed 100
>  no cdp enable
>  h323-gateway voip interface
>  h323-gateway voip id VMtristarGK ipaddr <removed> 1719
>  h323-gateway voip h323-id <removed>
>  h323-gateway voip bind srcaddr <removed>
> !         
> interface Serial3/0:23
>  no ip address
>  isdn switch-type primary-4ess
>  isdn incoming-voice modem
>  isdn map address .* plan isdn type unknown
>  no cdp enable
> !         
> voice-port 3/0:D
>  bearer-cap Speech
> !
> translation-rule 1111111
>  Rule 0 8661111111 34343434#19545551212
> !         
> .
> .
> ! Many dial-peers
> .
> .
> !
> dial-peer voice 1111111 pots
>  description "Ring-Too Customer - TDM inbound"
>  incoming called-number 8661111111
>  direct-inward-dial
>  port 3/0:D
> !         
> dial-peer voice 1111112 voip
>  description "Ring-Too Customer - IP outbound"
>  destination-pattern 8661111111
>  translate-outgoing called 1111111
>  session target ras
> !         
> dial-peer voice 1111113 voip
>  description "Ring-Too Customer - IP inbound
>  incoming called-number 34343434#1.T
>  voice-class codec 1
> !         
> dial-peer voice 1111114 pots
>  description "Ring-Too Customer - TDM outbound
>  destination-pattern 34343434#1.T
>  port 3/0:D
> !                  
> .
> .
> ! Many dial-peers
> .
> .
> !
> gateway 
> !
> !
> 
> 
> I have extensive debug traces if you are interested in seeing  them.
> 
> I hope you can offer  some tips.
> 
> 
> -- 
> David A. Lauer
> Network Engineer
> Tristar Communications
> 
> dalauer at tristarcorp.net
> 954.977.8081 ext. 21
> 
> 
> 
> _______________________________________________
> cisco-nas mailing list
> cisco-nas at puck.nether.net
> http://puck.nether.net/mailman/listinfo/cisco-nas

-- 
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      ||        ||                                 Dennis Peng
      ||        ||        Cisco Systems, Inc.      Escalation Engineer
     ||||      ||||       170 West Tasman Drive    Phone: (408) 526-6143
 ..:||||||:..:||||||:..   San Jose, CA 95134       Fax:   (408) 232-2343
   Cisco Systems Inc.                              dpeng at cisco.com
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