Gene Kochanowsky
2003-Jul-21 20:28 UTC
[Asterisk-Users] Using asterisk for a 911 call center....
Has anyone had any experience using asterisk for a 911 call center? Does anyone know of any reason why it would not be suitable? As far as I know all 911 call routing takes place at the CO switch so a regular T1 line should work fine. I understand that there is support for ACD in asterisk and that is should be possible to implement screen pop (CTI). Any comments? Gene Kochanowsky Solution Sciences, Inc.
Daryl Jones
2003-Jul-21 20:39 UTC
[Asterisk-Users] Using asterisk for a 911 call center....
911 trunks are usually delivered to public-safety answering points (PSAP) on analog reverse-battery facilities. (The PSAP provides battery toward the CO). ANI is provided using MF tones. The PSAP equipment must take the ANI and use it to submit a database query to lookup the caller's address (ALI - automatic location identification) to an external database that is usually operated by the ILEC or its contractor. The ANI and ALI information must be presented to the 911 call taker immediately upon answering the call. There is definitely a place for Asterisk in the public-safety telecomm field, but a lot of work would be needed for it to handle calls in a PSAP. If you're interested in learning more about PSAP equipment, take a look at the web pages for Plant Equipment, Inc, Positron, Inc. and Zetron, Inc. On Mon, 21 Jul 2003, Gene Kochanowsky wrote:> Has anyone had any experience using asterisk for a 911 call center? Does anyone know of any reason why it would not be suitable? As far as I know all 911 call routing takes place at the CO switch so a regular T1 line should work fine. I understand that there is support for ACD in asterisk and that is should be possible to implement screen pop (CTI). Any comments? >
Gene Kochanowsky
2003-Jul-21 20:43 UTC
[Asterisk-Users] Using asterisk for a 911 call center....
Daryl, thanks for the info! I'll checkout those companies. Gene -----Original Message----- From: Daryl Jones [mailto:daryl@tcomeng.com] Sent: Monday, July 21, 2003 11:39 PM To: asterisk-users@lists.digium.com Subject: Re: [Asterisk-Users] Using asterisk for a 911 call center.... 911 trunks are usually delivered to public-safety answering points (PSAP) on analog reverse-battery facilities. (The PSAP provides battery toward the CO). ANI is provided using MF tones. The PSAP equipment must take the ANI and use it to submit a database query to lookup the caller's address (ALI - automatic location identification) to an external database that is usually operated by the ILEC or its contractor. The ANI and ALI information must be presented to the 911 call taker immediately upon answering the call. There is definitely a place for Asterisk in the public-safety telecomm field, but a lot of work would be needed for it to handle calls in a PSAP. If you're interested in learning more about PSAP equipment, take a look at the web pages for Plant Equipment, Inc, Positron, Inc. and Zetron, Inc. On Mon, 21 Jul 2003, Gene Kochanowsky wrote:> Has anyone had any experience using asterisk for a 911 call center? Does anyone know of any reason why it would not be suitable? As far as I know all 911 call routing takes place at the CO switch so a regular T1 line should work fine. I understand that there is support for ACD in asterisk and that is should be possible to implement screen pop (CTI). Any comments? >_______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users
Michael Manousos wrote:> Jeremy McNamara wrote: > >> You should run chan_h323. It is distributed with Asterisk and works >> with G.729 and any other codec asterisk supports TODAY. There is no >> need to run a 3rd party driver. > > > Why not?I am expressing my own opinion on direct personal experience with your channel driver. I will let each and every Asterisk user make their own decision on what H.323 channel driver to run. As history shows, I personally tried to work with you in the past to make your driver work properly, but alas I was forced to create a completely separate H.323 channel driver, which now happens to be distributed along with Asterisk. For what its worth, Jeremy McNamara
Jeremy McNamara wrote:> Michael Manousos wrote: > >> Jeremy McNamara wrote: >> >>> You should run chan_h323. It is distributed with Asterisk and works >>> with G.729 and any other codec asterisk supports TODAY. There is no >>> need to run a 3rd party driver. >> >> >> >> Why not? > > > I am expressing my own opinion on direct personal experience with your > channel driver. I will let each and every Asterisk user make their own > decision on what H.323 channel driver to run. > > As history shows, I personally tried to work with you in the past to > make your driver work properly, but alas I was forced to create a > completely separate H.323 channel driver, which now happens to be > distributed along with Asterisk.History shows many things which I will not repeat again. Just because your channel driver is included with Asterisk and another one is not, means absolutely nothing. So stop using this as a reason of being better than asterisk-oh323 (chan_oh323).> > For what its worth, > > > Jeremy McNamara > >Michael.