M20 Digital Intercom System

Specifications

Display

• 3.5" Color LCD

Connectors

• One Ethernet Port (RJ-45)
• One Video RCA Analog Port
• One Stereo Audio RCA Analog Port
• One USB 1.1 (Type A)
• WiFi/Wireless 2.4Ghz 802.11b Interface

Codecs

• MPEG4/SP
• MP3
• G.711 (A-Law and µ-law)
• G.711 Annex I
• G.726 (16/24/32/40 kbps)
• G.729, G.729A
• G.726-32

Data Networking

• MAC address (IEEE 802.3)
• IPx4 - Internet Protocol Version 4 (RFC 791) upgradeable to v6 (RFC 1883)
• ARP - Address Resolution Protocol (RFC 826)
• DNS - A Record (RFC1706), SRV Record (RFC 2782)
• DHCP - Dynamic Host Configuration Protocol (RFC 2131)
• ICMP - Internet Control Message Protocol(RFC 792)
• TCP - Transmission Control Protocol (RFC 793)
• UDP - User Datagram Protocol (RFC 798)
• RTP - Real Time Protocol (RFC 1889)
• DiffServ (RFC 2475), Type of Service - TOS (RFC 791/1349)
• SNTP - Simple Network Time Protocol (RFC 2030)

Voice Gateway

• SIP v2 - Session Initiation Protocol Version 2 (RFC 3261, 3262, 3263, 3264)
• SIP Proxy Redundancy - Dynamic via DNS SRV,A Records
• Re-registration with Primary SIP Proxy Server
• Secure (Encrypted) Calling via Pre-Standard Implementation of Secure RTP
• Codec Name Assignment
• Dynamic Payload
• Adjustable Audio Frames per Packet
• DTMF: In-band and Out-band (RFC 2833)
• Flexible Dial Plan Support with Interdigit Timers and IP Dialing
• Call Progress Tone Generation
• Adaptive Jitter Buffer
• Frame Loss Concealment
• Full Duplex Audio
• Echo Cancellation - (G. 165/G.168) up to 128ms
• VAD - Voice Activity Detection w/ Silence Suppression
• Attenuation / Gain Adjustments
• Flash Hook Timer
• MWI - Message Waiting Indicator Tones
• VMWI - Via FSK
• Polarity Control
• Hook Flash Event Signaling
• Caller ID Generation (Name and Number) - Bellcore, DTMF, ETSI
• Music on Hold Client (Downloadable MOH Content)

Power

• 5V, 2A - External

Dimensions

• 10" (W) x 6" (H) x 5" (D)

* Specifications subject to change without notice.