Tutti i prodotti della famiglia DMG sono accumunati dalle seguente caratteristiche e peculiarità:

Protocolli – Session Initiated Protocol (SIP) –  RTP/RTCP per il trasporto della voce – T.38 per il trasporto dei Fax su rete IP  Interfacce IP –  Bandwidth  - 10/100 BaseT Full Duplex Ethernet -  Bandwidth optimization via codec negotiation and silence suppression – Transport Type -  SIP Call signaling packets transmitted via UDP or TCP - Voice packets transmitted via UDP – Security -  Configurazione abilitata allows DMG to support requests only from trusted IP endpoint(s) - Architecture supports addition of IP Security Protocol (IPsec) - SIP Authentication not currently supported  HTTP – Supports configuration, alarm reporting, and file transfers (including SW upgrades) – Access via client and/or programmatic interface  SNMP/SMTP – Support for SNMPv2 query commands – Generation of Traps and/or e-mail alarms  Telnet – Supports configuration and maintenance (debug tracing, etc.)  RS-232 – Supports configuration and maintenance (when Serial Protocol not used)  BootP and TFTP –  Supports configuration and file transfers

Interfacce Audio –  Audio Compression -  G.711 (A-law and µ-law) -  G.723.1 - G.729A - Support 10ms, 20ms, and 30ms frames –  Digit Relay -   Inband-Tone: DTMF tones coded into regular audio (RTP) packets (only supported with G.711) -    AVT: DTMF tones transferred via RTP packets as defined in RFC2833 –  Voice Activity Detection - If enabled, gateway transmits SID packet to IP endpoint when silence detected - Transmission continued when voice activity is detected –  Call Progress Detection - Configurable tones definitions via *.ini file –  Quality of Service - S upport for Type of Service (TOS) and DiffServ –  Line Echo Cancellation - 128ms echo tail –  Comfort Noise Generation - Upon reception of SID packet –  Advanced Configuration Options -  Gain control in IP-to-Circuit and Circuit-to-IP -    Line Echo Cancellation control (aggressiveness, etc.) -  Voice Activity Filters -     Call Progress Filters  Ridondanze & Fault Tolerant – Back-up Proxy –  Auto-Restart - Auto restart  in caso di errori Software o scadenza del WDT -  Le informazioni relative all’errore sono disponibili nella tabella allarmi