I had been working with Alcatel OmniPCX 4400 since 1998 and its VoIP solution is good.
If you have an specific question I would be glad to help you. Send me a mial ogive me a call
my email is firstname.lastname@example.org and my phone numbers are 591-3525200 Ext. 243.
Luis Fernando Martinez
DIMA – ALCATEL
Santa Cruz BOLIVIA