we are the company with Multiple location. right now we have Inter-tel Phone System with IPRC Card for IP base phones. but no Call center and no other features. just basic system.
we are looking for differnent solution. we got demo base on Cisco IP Telephony with Call center. looks good. but need complete network overhall. need to put new routers, new switches. lot of new cabling. also need lot of maintence after that.
also we are looking for nortel solution BMC 400 for head office and BMC 50 for remote office with call center. and office to office IP base phones.
my question is ? what is best for us .. Cisco or Nortel ?