[cisco-voip] Post-dial Delay - two H.323 gateways with E1 interface

[Syed Khalid Ali]

Greeting:

I am having the same issues, but the scenario is a bit different. I have a
nortel 11c and 61c pabx connected voice gateways. these gateways are
connected with p2p wireless link.
PSTN<-->61c pabx<--QSIG/PRI-->VG<--p2p wireless-->VG<--QSIG-->11c pabx

the 61c pabx provides PSTN connectivity. Another thing is that I have my
dial-peer configured with "9." destination patterns and extension dialing
destination pattern are more specific.

One more thing I like to point out that QSIG/PRI is the signaling protocol
between voice gateways and pabx(es).

Regards,
Khalid


On Tue, Nov 24, 2009 at 1:49 PM, Nick Matthews <matthnick at gmail.com> wrote:

> e1r2 is a slow signaling method (the slowest, actually).  If you're
> not dialing a 9# number, and you are dialing one of the 8... numbers,
> it doesn't look like anything on the router is causing it.  You would
> have to get some debugs and look at the time stamps to decode what's
> going on with more detail than that.
>
> -nick
>
> On Mon, Nov 23, 2009 at 9:29 AM, Gustavo Rodrigues Ramos
> <gustavo at nexthop.com.br> wrote:
> > Hi Jorge, thanks for your reply, but I don't think this is the case
> > since from the PSTN to the extensions the two dial-peers are pretty
> > much straightforward (destination-pattern 8... on both gateways).
> >
> > Gustavo.
> >
> >
> > On Mon, Nov 23, 2009 at 12:15 PM, Jorge L. Rodriguez Aguila
> > <jorge.rodriguez at netxar.com> wrote:
> >> As Dennis said, to eliminate the pause, create dial peers with more
> exact patterns.
> >>
> >>
> >> Jorge Rodriguez, CCVP, CRMCS
> >> Senior Voice/Data Consultant
> >> Netxar Technologies
> >> PCS 7876888530
> >> jorge.rodriguez at netxar.com
> >>
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] On Behalf Of Dennis Heim
> >> Sent: Monday, November 23, 2009 9:58 AM
> >> To: Gustavo Rodrigues Ramos; cisco-voip at puck.nether.net
> >> Subject: Re: [cisco-voip] Post-dial Delay - two H.323 gateways with E1
> interface
> >>
> >> Whenever you a T in your destination-pattern you will get your
> interdigit timeout.
> >>
> >> Dennis Heim
> >> Network Voice Engineer
> >> CDW  Advanced Technology Services
> >> 11711 N. Meridian Street, Suite 225
> >> Carmel, IN  46032
> >>
> >> 317.569.4255 Office
> >> 317.569.4201 Fax
> >> 317.694.6070 Cell
> >> dennis.heim at cdw.com
> >> www.berbee.com
> >>
> >>
> >> -----Original Message-----
> >> From: cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] On Behalf Of Gustavo Rodrigues Ramos
> >> Sent: Monday, November 23, 2009 12:16 AM
> >> To: cisco-voip at puck.nether.net
> >> Subject: [cisco-voip] Post-dial Delay - two H.323 gateways with E1
> interface
> >>
> >> Hello,
> >>
> >> I've configured a very simple H.323 environment. Two Cisco 2811 (IOS
> >> 12.4(15)T) as H.322 gateways with one E1 (CAS R2) interface each.
> >> There is a PBX connected to the first gateway (through the E1
> >> interface) and the other one is connected to the PSTN. Everything looks
> good (calls are following from the PBX to the PSTN and vice-versa), however
> there is a 15 seconds post-dial delay that I couldn't fix.
> >>
> >> I've tried to change the DTMF, H.323 and voice-port inter-digit timeout
> with no change in the post-dial delay... I suspect that this is related to
> the H.323 connection or codec negotiation, but can't tell for sure. The
> below configuration is what I'm using in both gateways.
> >>
> >> If anyone can point me to a direction, I would really appreciate.
> >>
> >> Thanks in advance,
> >> Gustavo.
> >>
> >>
> >>
> >> !
> >> voice class codec 1
> >>  codec preference 1 g729r8
> >> !
> >> voice class h323 1
> >>  h225 timeout tcp establish 3
> >>  h225 timeout setup 3
> >>  call start fast
> >> !
> >> controller E1 0/2/0
> >>  framing NO-CRC4
> >>  ds0-group 0 timeslots 1-15,17-21 type r2-digital r2-compelled ani
>  cas-custom 0
> >>  country brazil use-defaults
> >>  metering
> >>  category 2
> >>  answer-signal group-b 1
> >>  dtmf timer inter-digit 250
> >> !
> >> !
> >> !
> >> voice-port 0/2/0:0
> >>  cptone BR
> >>  timeouts initial 1
> >>  timeouts interdigit 2
> >>  music-threshold -60
> >> !
> >> !
> >> !
> >> dial-peer voice 2 pots
> >>  description CONNECTED to PSTN
> >>  destination-pattern 9#T
> >>  progress_ind alert enable 8
> >>  progress_ind progress enable 8
> >>  direct-inward-dial
> >>  port 0/2/0:0
> >> !
> >> dial-peer voice 11 voip
> >>  description CALL LEG TO OTHER GATEWAY
> >>  destination-pattern 8...
> >>  translate-outgoing called 99
> >>  voice-class codec 1
> >>  voice-class h323 1
> >>  session target ipv4:192.168.x.x
> >>  dtmf-relay h245-alphanumeric
> >>  fax protocol cisco
> >> !
> >> !
> >> gateway
> >>  timer receive-rtp 1200
> >> !
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-- 
Thanks,
Syed Khalid Ali
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