Funny NYPD wrote:
> Curious why not use skype? What's the pros and cons compare with other VOIP? 
>   
The big issue with skype is it is a closed system, you have to use thier 
softphone or one of a handfull of licensed hardware products. It also 
has a reputation for (ab)using the bandwidth of people with open 
internet connections to route calls for those with less open ones.

Also even if they opened up the protocol the fact they use names not 
numbers would make integrating it with a PBX tricky.

With providers based on open standards I can buy my hardware from 
anywhere and I can shift providers at will. If I want I can even set up 
a software PBX and do least cost routing through multiple providers and 
since the protocol is a standard and the hardware and network vendors 
are usually different I know it won't be (ab)using my internet 
connection to route calls for others.

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