[cisco-voip] migrtaion to VoIP

Teodor Georgiev teodor at voicelink.biz
Sun Mar 7 15:56:33 EST 2004



>
>=> 2. Quintum D1600 & D2400 & D3000 series have 2 PRIs (one for PBX and one
for PSTN). D3000 costs about >$3000.
>=>     And these gateways are really, really very good.

>Not to begin a flame war, but in which sense of 'good' you say that? IN the
>sense of broken h.323 implementation, overflowing time counters,
>documentated features that not working as described for a lifetime of
>software release?

Jakub, do let me know for ALL your problems with Quintum gateways and I
promise in front of the whole forum
readers to fix it for you  completely  *** FOR FREE ***.
Quintum gateways have had bugs (like any other hardware/software product),
but that is a past.

>I'm looking for a solution to such a problem:


  /--- PSTN - INGRESS
  PBX--BOX
  \
   --- PSTN - EGRESS

 I want the above noted BOX to have 3xE1/PRI:

  1 - to connect to the PSTN for INGRESS only calls
  2 - to connect to the PSTN for EGRESS only calls
  3 - to connect to the PBX originating/terminationg the BOX
      routes to/from PSTN.

> Of course i could do that with AS5350 or somesuch, but i don't want
>to relay on H.323/CCM or any other VoIP protol here - i want the device to
>be self-sufficient, doing just channel multiplexing. I could do that with
>another PBX, but i'd like to know if that's possible with some combination
>of Cisco hardware. If yes - which? :>

It is not really needed to run VoIP on Cisco gateway in order to
interconnect 2 or more PRIs. The magic word
here is "TDM". Cisco can do channel multiplexing.

In example I have a scheme like:

PBX <---- PRI ---->  Cisco AS 5350 <---- PRI ----> PSTN

without even mentioning the word H.323/SIP/codec in my config.










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