Avaya, Nortel, . Avaya.

, , Avaya Aura, Agile Communications Environment (ACE), Nortel. - SIP - .

Nortel Avaya IP Office , Nortel (Communication Server 1000, Communication Server 2100, Multimedia communication Server 5100 Application Server 5300) .

SMB SIP- Avaya Software Communication System ( Nortel).