- Support for up to 500 subscribers, 50 SIP trunk accounts, up to 50 simultaneous calls
- Zero configuration for Grandstream SIP endpoints
- Maximum protection using SRTP, TLS and HTTPS encryption
- Dual network Gigabit ports with built-in PoE
- IVR support up to the fifth level (Autoinformer)
- Built-in call recording server, access to recordings via web user interface
- Support for call queue for efficient management of high volume of calls
- Built-in call detail (CDR) to track phone usage with line, date, etc.
- Multilingual answering machine for efficient management of incoming calls
- Built-in LDAP and XML phonebooks, flexible dial plan
- Supports any SIP video endpoints using H.264, H.263 and H.263 + codecs
- Support for sending voicemail and fax messages to email