[Asterisk-Users] Fair comparison

[James Sizemore]

Big issues for sip:  (Please note I use both Asterisk and Vocal between 
the two you can have a fairly scalable sip environment with a fair 
amount of call features.)

Pluses for Vocal:
For sip switching Vocal is much more scalable, You can have a cluster of 
UserAgents and Gateways. It never terminates rtp streams so  Vocal can 
not easily be over run with
calls. But vocal is mostly just a voip call switch. (Like SER)
Negatives for Vocal:
Has Zero usable call features, It can route sip calls all day no 
problem, Don't even try to have it do call features everyone of them has 
some problem or another.

Asterisk pluses: It has call features, Not always implemented the best 
way but has them in boat loads!  Asterisk is an ok switch for sip calls, 
but you can never have more then one box doing the job.  

Asterisk Negatives:  It crashes. (It is development code) It terminates 
every sip call that goes through it so can only scale to the point of 
the boxes ability to excepts the rtp streams. (You can do some 
clustering of dial plans but this does not help with incoming sip 
registration and call paths IE your call drops if your box reboots)

You may also want to through SER in your list of systems to evaluate.

Kim C. Callis wrote:

>I was trying to do a little searching to see if there has even been a
>comparison between Asterisk and VOCAL or any of the other OSS packages?
>"Practical Voice Over IP using VOCAL" published by O'Reilly and
>Associates, attempts to make a strong case about how scalable VOCAL. Of
>course, considering that the book is written by the makers of VOCAL, it
>tends to have a one sided slant.
>
>Maybe we should try to put together an unbiased comparison (read that as
>pro/con). I was talking at a meeting about Asterisk, and someone
>attempted to start flaming Asterisk, and swearing by VOCAL, while
>another was babbling about the wonders of Bayonne. The only thing that
>was successful in that meeting about VOIP solutions was tabling that
>discussion until a future (as in way, way in the future) date.
>
>Just a thought!
>
>Kim C. Callis
>
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