[Asterisk-Users] T3 Mux and Asterisk Question

[Greg Oliver]

I am unsure of * capabilities on NFAS (we do not use PCs to terminate
any PRIs), but it allows bonding of desparate PRIs to use a single
d-channel.  ie, you can have 1 d-channel (optional backups) for the
entire DS3.  Not sure if * can communicate across cards like that in the
same bus though.

On Sun, 2006-01-22 at 23:42 -0500, Greg Boehnlein wrote:
> On Sun, 22 Jan 2006, Steve Totaro wrote:
> 
> > I have a T3 coming from my carrier.  From there I want to use an Adtran
> > mx2800 T1 Mux to break the T3 into 28 T1/PRI which feed into seven quad
> > T1/PRI equipped servers.
> > 
> > Everything seems very straight forward with the exception of the D
> > channels for the T1/PRI.
> > 
> > I am not very familiar with large circuits such as T3s.  I know that I
> > can use one D channel per set of quad port on each server.  So if each
> > server has a quad port card, I can use one channel as the D channel for
> > all four spans.
> > 
> > That gives me seven D channels in my setup.  Does anyone know how the
> > Mux handles these D channels onto the T3?  My guess is the Mux is simple
> > going to send all of the channels onto the T3 without modifying
> > anything. 
> 
> That's correct. The T1 spans on the DS3 are completely independent of the 
> clocking on the DS3. The D-channel and timing is something that will be 
> handled by your upstream Telco and the switch that you'll be connecting 
> to. Or, your own box.. ;)
>  
> > What I would really like to do is have one D channel coming in on the T3
> > and have it split between each of the T1/PRI or even better one D
> > channel per quad (I know Asterisk can do that). 
> > 
> > Is it possible?
> 
> No.
> 
> > If the Adtran mx2800 cannot do it, is there anther
> > product that can.  I have looked at the RAD Optimux T3 product but have
> > had great experience with Adtran products.  The price is the same but
> > the Adtran allows for two controller cards so it seems to have more
> > built in redundancy.
> > 
> > Any tips would be appreciated.
> 
> Adtran's MX-2800 is our choice for Muxes. They are solid, reliable and 
> work well. Adtran's technical support is amazing. When you purchase an 
> MX-2800, you are immediately given access to the Adtran Carrier support 
> group, which doesn't even blink about sending out an advance replacement 
> unit overnight if you ask.
>