[SC.LUG] Port 1765 & CFT

[Andy Roffe]

Hi Damien,

Yep. Good stuff. We've been using aterisk for a year or two now and have 
been developing services
on it for some customers. It's come a long way in the last year and 
Digium's sponsorship is making
a big difference. The problem for asterisk (and it's alternatives) come 
in when interfacing with existing
kit when a lot of lines are required (more than 15). Although it isn't 
strictly speaking an asterisk problem, the cost
of E1 hardware starts to get expensive due to the need to speak with 
other high end PBX kit.
And of course not all hardware is the same although it claims to be.

However, in a virgin site(s) asterisk rocks. You can build a very 
complex and powerful PBX for a fraction
of the cost of , say, a Siemens HiPath 3700 which can cost anything up 
to 100k. Asterisk equivilant would
be about 30k with support an greater flexibility. It can still be a bit 
fiddly to setup but once running
bomb proof.

For a smallish business with 4 ISDN Bri NTBA's I'd still consider 
alternatives though, due to cost.

Asterisk really wins out as a gateway between multiple branches over 
vpn's. I do use the commercial
codecs though... $10 a pop but awesome quality and I'm easily reaching 
the claimed 8k a call.

This would be a good subject for the LUG, I reckon - it'd take some 
preparation and a big subject
for one meeting.

ANdy



damian at damosoft.co.uk wrote:

> On Tue, 21 Sep 2004, Andy Roffe wrote:
>
>> Geoff,
>>
>> <snip>
>> I was wondering if anyone could tell me what CFT is?
>> </snip>
>> These ports are probably used to settle H323 or SIP registration on 
>> the gateway.
>> Although, that is really just a guess based on a bit of voip 
>> development we've been doing recently.
>
>
> Ive been working with Asterisk, and loving every minute of it.  Im 
> with a group of geeks called Neurd network and we are linking 
> Asterisk's up in each our countries to offer a internal phone system 
> between ourselves and calling countries.
>
> afaik SIP doesnt go that low 5060 and something around 5000
>
>> Most commercial voip systems make M$ look postively pleasant about 
>> vendor lock in.
>> We just priced a siemens system at over well over 6 figures or 
>> marginally cheaper than ISDN costs.
>> I can't think why :o|
>
>
> Get an Asterisk setup!  Its easy to setup and the POTS cards and well 
> made.
>