It Supports up to 2000 users,50 SIP trunks accounts, up to 200 concurrent calls. It Supports up to a 5-level IVR ( Interactive Voice Response ). It has E1 and T1 PRI Line. Its have Built-in call recording server, also Supports call queue management. Built-in Call Detail Records (CDR) for tracking phone usage by line.Integrated LDAP and XML phonebooks, Supports, voicemail and fax forwarding to email. 1GB RAM and 32GB flash.
UCM6208 supports up to 800 users and 100 concurrent calls, Auto Discovery and Zero Configuration of Grandstream SIP endpoints, Integrated 8 PSTN trunk FXO ports, 2 analog telephone FXS ports with lifeline capability and up to 50 SIP trunk accounts, Integrates PoE, USB, SD card, Supports up to a 5-level IVR , Built-in call recordings server,Built-in Call Detail Records. call queue to efficiently handle incoming calls.
It supports up to 500 users and 50/75 concurrent calls,Integrated 2/4 PSTN trunk FXO ports, 2 analog telephone FXS ports with lifeline capability and up to 50 SIP trunk accounts Gigabit network ports with Integrates PoE, USB, SD card Supports up to a 5-level IVR (Interactive Voice Response) Built-in call recordings server; recordings accessible via web user interface Built-in Call Detail Records (CDR) for tracking phone usage by line.