[Asterisk-Dev] Wildcard TE410P Question

[Ray Burkholder]

Hi Steve,

Do you have your SS7 module available for sale or rent yet?  I have an
opportunity in Bermuda for it.

Ray.

Quoting Steve Underwood <steveu at coppice.org>:

> Paul Cadach wrote:
> 
> >Hello,
> >
> ><creslin at digium.com> wrote:
> >  
> >
> >>I know that the framer does support some primitives
> >>for doing SS7 signalling, but I do not they are enabled by default in the
> driver
> >>for the TE410P.
> >>    
> >>
> >
> >Framer used in TE405P/TE410P have builtin SS7-capable HDLC controller which
> COULDN'T be used by current HARDWARE design
> >in bus-mastering mode, only  by regular polling of framer's registers.
> >  
> >
> Correct. The card's hardware design precludes the use of the hardware 
> HDLC controller. However, this isn't really a problem when you only want 
> to use one 64K slot for HDLC.
> 
> In our SS7 software for the TE405P/TE410P cards and Asterisk, we use the 
> software HDLC built into the zaptel drivers, and deal with MTP and the 
> higher layers in our userland code. The only problem with this, is the 
> flood of FISU messages (tiny messages which occupy all idle time on SS7 
> links), as there are so many. We modified the zaptel driver to mitigate 
> this flood.
> 
> Another workable strategy would be to operate the zaptel driver in clear 
> mode for the signalling channel, and do the HDLC stuffing in userland. 
> Then you only need to deal with 50x20ms blocks of data per second.
> 
> Regards,
> Steve
> 
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-- 
Ray Burkholder
http://www.oneunified.net
ray at oneunified.net
441 505 7293

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