We are contemplating migrating away from a 2 site Nortel BCM VOIP system and moving to another vendor. One that is on the short list is Cisco. We currently have 2 sites, connected via VPN over DSL using Nortel Contivity switches. We only have 4 voice trunks connected at most. The remote site has a BCM 200 and all IP phones (Nortel i2002). Our main site has a BCM 400 (3.6) , a mix of Nortel IP phones (i2002/i2004) and a few soft-phones (i2050). Our main site has reception phones that do not use VOIP, they have extended feature buttons for easy transfer of calls. M7324 (with cap modules).
Our main site supports about 70 users, our remote site about 10. There are some teleworkers that VPN in and have voice traffic.
That being said, which Cisco products would directly compete with our system and does anyone have any real-world experience in migrating from one system to another?
CME on a 2921.
Does all what you said and lot more.
However you cannot do this yourself. You need to engage a reputable consultant or certified partner.