[Asterisk-Users] FGD Support

[Jason Miller]

Has Digium gotten back with you on the quote or if they can/will do it?


Thank you,
Jason Miller
Eminent Network Technologies Inc.
d/b/a Interlinc.net
Phone:  417.239.1399 ext. 107
jwm at interlinc.net


> From: James Taylor <jltaylor at metrotel.net>
> Reply-To: Asterisk Users Mailing List - Non-Commercial Discussion
> <asterisk-users at lists.digium.com>
> Date: Mon, 04 Apr 2005 11:42:46 -0500
> To: <asterisk-users at lists.digium.com>
> Subject: [Asterisk-Users] FGD Support
> 
> For those of you who want to look like a "real" phone company, and plan on
> connecting to the LEC so that you look like a long distance carrier
> instead of a customer, there are some mods to the ZAP channel which must
> be made.
> 
> When you order Feature Group D as a "customer" Asterisk works fine right
> now.
> 
> If you order Feature Group D and want to provide service as a IC or IXC
> (long distance carrier) and provide Equal Access, you must "look" like an
> Equal Access End Office (EAEO).  To do this, there is an additional packet
> that must be exchanged and acknowledged in the dialing sequence.
> 
> I have submitted a request to Digium for a quote on this modification.
> 
> Jason Miller at interlinc.net has added his spport to this project,
> because he needs it working yesterday.
> 
> If you have an interest and would like to assist in getting this
> modification off the ground and completed quickly, then you might want to
> contribute financially.
> 
> If you have an interest and can't contribute, we'd still like to hear from
> you and know that this feature might help you.
> 
> Contact me off list if you can help.
> 
> James Taylor
> MetroTel
> 3505 Summerihll Road
> Suite 11
> Texarkana, Texas  75503
> 903-793-1956
> 
> Below is a copy of my email to Digium:
> 
> This is a requst to modify the Zap channel to provide additional FGD
> support.
> 
> Please let me know what the charges will be, so we can get approval and
> get started.
> 
> As more and more Asterisk boxes connect to the PSTN, there is a need to
> look like an IXC or CLEC.
> Short of SS7, MF signaling with FGD is the next best thing.
> 
> I'm woking with Jason Miller, who has sent in other support requests on
> getting FGD to work.
> 
> I've examined the source code and it appears that FGD works fine if you
> connect to a long distance carrier.
> 
> But, if you "are" the long distance carrier and connect via the LEC's
> Access Tandem, there's another packet that must be exchanged.  We've tried
> putting it in the dial command and can't get the timing to work since
> there are additonal winks.
> 
> Asterisk really looks like an Equal Access End Office at this point.
> 
> The exchange below illustrates overlap dialing, which is not generally
> going to happen with Asterisk.
> Asterisk will have all customer digits and just fake the overlap.
> 
> Here's what takes place:
> 
> Customer -->  Asterisk -->  Access Tandem (LEC) --> IC (long distance
> carrier)
> 
> Origionating Sequence
> 
> Customer dials (10xxxx)+(0/1)+(NPA)+NXX
> Asterisk    Access Tandem  IC
> 
> 1. Seize ->
> 2. <-Wink
> 3. KP+OZZ+XXX+ST->
> 4.      Seize ->
> 5.      <- Wink
> 6. <-Wink
> 7. KP+II+ANI+ST or KP -ST ->
> After customer completed dialing XXXX
> 8. KP+(0)+7/10D+ST ->
> 9.      <-Wink
> 10. <-Wink
> 11.      <-Answer Supervision
> 12. <-Answer Supervision
> 
> 
> Terminating Sequence
> 
> IC     Access Tandem  Asterisk
> 
> 
> 1. Seize ->
> 2. <-Wink
> 3. KP+7 or 10D+ST ->
> 4.      Seize ->
> 5.      <-Wink
> 6.         Ringing->
> 7.         <-Answer
> 8.     <-Answer Supervision
> 9. <-Answer Supervision
> 
> 
> Complete specs are in SR-TSV-002275.
> 
> 
> 
> 
> 
> 
> -- 
> James Taylor
> MetroTel
> 3505 Summerihll Road
> Suite 11
> Texarkana, Texas  75503
> 903-793-1956
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