[Asterisk-Users] PRI and QSIG

[janvb at caselaboratories.com]

>
> Anyhow, I'm now thinking about using QSIG, I've configured two spans 
> of a TE405P as switchtype = qsig and connected them back to back for 
> testing and calls are ok.  However, I cant find any documentation 
> relating to what messages I might see come across the link once I 
> connect it to the INDeX and what I can do with them when they do.  Any 
> pointers anyone?

Try 
http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-164.pdf

You might also want to search for PSS1 at ISO etc. The spec above is the 
Inter Exchange.

Q.Sig can be a bit complex as is a 'private network' made of E1 
connections and as such also contains some SS7 alike funtionality, but 
Layer 3 wich is of interest for you is not that different from Q.931 
(which is the base for EuroISDN and NI3).

Jan