from the zaptel sample config: # "dacs" : The zaptel driver cross connects the channels starting at # the channel number listed at the end, after a colon # "dacsrbs" : The zaptel driver cross connects the channels starting at # the channel number listed at the end, after a colon and # also performs the DACSing of RBS bits dacs=1-24:48 dacsrbs=1-24:48 I've googled a little and not found much more than this. The question is: 1) what exactly does 1-24:48 mean in terms of this function. If I have two T1 interfaces and I want to literally just 'cross-connect' the first to the second (channel 1 to channel 1, 2 to 2.... 24 to 24), what would the entry look like? 2) can you cross connect PRI interfaces? in other words can you use the dacs functionality to insert a digium card (on a system running asterisk) in between a pri from a carrier, to a legacy pbx system? would you set the signalling as pri in this case (if you can even do this), or would you set it to something else and just pass the t1 as clear channels and ignore the signalling as just another channel with data on it. -Chris
You can connect two PRI devices together using a T1 crossover cable.> from the zaptel sample config: > > # "dacs" : The zaptel driver cross connects the channels starting at > # the channel number listed at the end, after a colon > # "dacsrbs" : The zaptel driver cross connects the channels starting at > # the channel number listed at the end, after a colon and > # also performs the DACSing of RBS bits > > dacs=1-24:48 > dacsrbs=1-24:48 > > I've googled a little and not found much more than this. > > The question is: > > 1) what exactly does 1-24:48 mean in terms of this function. > > If I have two T1 interfaces and I want to literally just 'cross-connect' > the first to the second (channel 1 to channel 1, 2 to 2.... 24 to 24), > what > would the entry look like? > > 2) can you cross connect PRI interfaces? > > in other words can you use the dacs functionality to insert a digium card > (on a system running asterisk) in between a pri from a carrier, to a > legacy > pbx system? > > would you set the signalling as pri in this case (if you can even do > this), > or would you set it to something else and just pass the t1 as clear > channels and ignore the signalling as just another channel with data on > it. > > -Chris > > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
On Fri, Jul 02, 2004 at 02:48:17PM -0700, Chris A. Icide wrote:> > 2) can you cross connect PRI interfaces? > > in other words can you use the dacs functionality to insert a digium card > (on a system running asterisk) in between a pri from a carrier, to a legacy > pbx system? >Yes, you can. But what's the point ? With such a setup (zaptel bridging), you don't get that many benefits. I developed a small std-local driver that can help you : - cross connect two PRIs - and get a monitoring feed (imagine a "Y" cable), so that you can do (read-only) analysis on the PRI traffic. But I doubt that's what you want to do there. What you may want to do is being able to use the legacy PBX, as well as Asterisk features. For that, you need to : - setup Asterisk for the PRI connection to the telco (pri_cpe) - setup Asterisk for the PRI connection to the legacy PBX (pri_net) - setup your dialplan (extensions.conf) so that : - Asterisk talks to the telco the right way - Asterisk talks to the PBX the right way - Asterisk forwards calls to/from the PBX the right way - Asterisk does whatever else you want it to do It's not that hard. However, it will probably involve some "trial and error", and your PBX users might not like it. -- Nicolas Bougues Axialys Interactive