[Serusers] SER & PSTN gateways (Ovislink?)

[Tom]

  Is anyone using any of the Ovislink PSTN gateways (eLive 400/800) with
SER?

  The products specs state support for H.323 and SIP.  Like many products
it means that the unit supports only H.323, and you need to download new
firmware which replaces H.323 with SIP.  I'm new to SIP in general, and
haven't got a working configuration yet.

  How is PSTN gateway security supposed to work?  I see in the manual
there is an example using SER to protect a "simple" gateway.  Ovislink
definitely fits into that category.  I guess that means that I need to put
ACLs on the router to make sure that all SIP traffic to the gateway is
blocked except from the SER server.  How do better gateways implement
security?

  Any nice PSTN gateways around that anyone can recommend for use?  I'm
looking at Cisco, which seems like a lot of people use.  I've looked at
Patton and Vegastream too.  Neither of these companies has a 8 port POTS
PSTN gateway though.


Tom