Data networking

• MAC address (IEEE 802.3)

• IPv4 - Internet Protocol v4 (RFC 791)

• ARP - Address Resolution Protocol

• DNS - A record (RFC 1706), SRV record (RFC 2782)

• DHCP client - Dynamic Host Configuration Protocol (RFC 2131)

• ICMP - Internet Control Message Protocol (RFC 792)

• TCP - Transmission Control Protocol (RFC 793)

• UDP - User Datagram Protocol (RFC 768)

• RTP - Real Time Protocol (RFC 1889, 1890)

• RTCP - Real Time Control Protocol (RFC 1889)

• DiffServ - Differentiated Services (RFC 2475)

• ToS - Type of service (RFC 791, 1349)

• VLAN tagging 802.1p/Q - Layer 2 quality of service (QoS)

• SNTP - Simple Network Time Protocol (RFC 2030)

Voice gateway

• SIPv2 - Session Initiation Protocol version 2 (RFC 3261, 3262, 3263, 3264)

• SIP proxy redundancy - Dynamic via DNS SRV, A records

• Reregistration with primary SIP proxy server

• SIP support in NAT networks (including STUN)

• SIPFrag (RFC 3420)

• Secure (encrypted) calling via prestandard Implementation of Secure RTP

• Codec name assignment

• Voice algorithms:

• G.711 (A-law and mu-law)

• G.726 (16/24/32/40 kbps)

• G.729 A

• G.723.1 (6.3 kbps, 5.3 kbps)

• Dynamic payload support

• Adjustable audio frames per packet

• DTMF - Dual-tone multifrequency, in-band and out-of-band (RFC 2833) (SIP INFO)

• Flexible dial plan support with interdigit timers

• IP address/URI dialing support

• Call progress tone generation

• Jitter buffer - Adaptive

• Frame loss concealment

• VAD - Voice activity detection with silence suppression

• Attenuation/gain adjustments

• VMWI - Voicemail waiting indicator via NOTIFY, SUBSCRIBE

• Caller ID support (name and number)

• Third-party call control (RFC 3725)

Provisioning, administration,

and maintenance

• Integrated web server provides web-based administration and configuration

• Telephone keypad configuration via display menu/navigation

• Automated provisioning and upgrade via HTTPS, HTTP, TFTP

• Asynchronous notification of upgrade availability via NOTIFY

• Nonintrusive in-service upgrades

• Report generation and event logging

• Statistics transmitted in BYE message

• Syslog and debug server records: configurable per line

Physical Interfaces

• One 10BASE-T RJ-45 Ethernet port (IEEE 802.3)

• Handset: RJ-9 connector

• Built-in speakerphone and microphone

• Headset 2.5-mm port

Power supply

• Switching type (100-240V) automatic

• DC input voltage: +5 VDC at 2.0 amps maximum

• Power adapter: 100-240V 50-60 Hz (26-34 VA) AC input

Indicator lights/LED

• Speakerphone on/off button with LED

• Headset on/off button with LED

• Mute button with LED

• Message waiting indicator LED

• Voicemail message retrieval button

• Hold button

Dimensions (W x H x D)

7.68 x 6.30. x 7.09 in. (195 x 160 x 180 mm)

Unit weight

2.15 lb ( 0.9752 kg)

Operating temperature

41º ~ 113ºF (5º ~ 45ºC)

Storage temperature

-13º ~ 185ºF (-25º ~ 85ºC)

Operating humidity

10% to 90% noncondensing

Storage humidity

10% to 90% noncondensing