[Freeswitch-dev] OpenZAP/Q.931 question

[Michael Collins]

Jan,

Thanks for the reply.  It turns out my configs were messed up.  I am now
up and running with working D-channels in a test environment. (See the
other thread about Mikey's experimenting.)

I'll have more questions in the near future, but I think I've got the
Q.931 issue resolved by getting the correct configuration in place.

-MC

> -----Original Message-----
> From: freeswitch-dev-bounces at lists.freeswitch.org
[mailto:freeswitch-dev-
> bounces at lists.freeswitch.org] On Behalf Of Jan Berger
> Sent: Monday, November 05, 2007 4:21 AM
> To: freeswitch-dev at lists.freeswitch.org
> Subject: Re: [Freeswitch-dev] OpenZAP/Q.931 question
> 
> 
> Hi MC,
> 
> [
> 08 - Protocol Discriminator Q.931
> 02 - CRV header- CRV length is 2 octets
> 00 00 - CRV Send from Originating side.
> 46 - Message Type RESTART
> 
> As the error message says - illegal CRV.
> 
> RESTART uses the global CRV, so the message should have been
> 
> 08
> 00
> 46
> 
> ...
> 
> Simply - RESTART don't use a CRV because you don't restart a call. You
> restart an Interface - Calls are RELEASED.
> 
> And I don't think FreeSWITCH support the later anyway, so we need to
fix
> that.
> 
> Jan
> 
> -----Original Message-----
> From: freeswitch-dev-bounces at lists.freeswitch.org
> [mailto:freeswitch-dev-bounces at lists.freeswitch.org] On Behalf Of
Michael
> Collins
> Sent: 3. november 2007 07:15
> To: freeswitch-dev at lists.freeswitch.org
> Subject: [Freeswitch-dev] OpenZAP/Q.931 question
> 
> This one's probably for MikeJ...
> 
> I am testing out the PRI on OpenZAP.  My carrier doesn't support
DMS100
> so I'm using an Asterisk box to act as my telco.  I'm set up on
Asterisk
> with pri_net signaling in Zapata.conf, using the 24th channel as the D
> channel.  I'm pretty sure that the D channels are communicating
because
> I'm getting an error on the actual data sent.
> 
> Here's what I see when I start up FS:
> 2007-11-02 22:39:46 [DEBUG] zap_isdn.c:223 zap_isdn_921_23() READ 13
>
------------------------------------------------------------------------
> --------
> [08 02 00 00 46 18 03 a9 83 82 79 01 80]
> 
> 2007-11-02 22:39:46 [DEBUG] zap_isdn.c:227 zap_isdn_921_23() 931 parse
> error [-3012] [Q931E_INVALID_CRV]
> 
> If I read my Q931 specs properly, the data being sent over in this
case
> is a RESTART (the 46 in 5th octet).
> 
> Question: does the parse error indicate a setup issue or do you think
> possibly that Asterisk isn't necessarily a good way to emulate a telco
> PRI circuit?  On a DMS100, what would the proper RESTART string look
> like coming from telco?
> 
> Thanks,
> MC
> 
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