Appendix A

Specifications

Network

SIP, RTP, RTCP, TFTP, TCP, UDP, DHCP, DNS, ARP, ICMP,

Protocols

Telnet

Call Control

SIP

Protocols

 

Audio

Codec: ITU G.711 (PCM), two low bit rate (G.723.1 and G.729A

Standards

/ G.729AB)

 

Acoustic Echo cancellation supporting high-quality

 

speakerphone

Keypad

Features &

Handset

LCD

LED

LAN

Memory

Full-duplex

12 standard dialing keys: 0-9, *, #

16 feature keys: Redial, Hang-up/Release, Hold, Intercom, Speaker, Mute, Headset, Flash, Speed dial, Transfer, Conference, Speaker, Voicemail, Voicemail greeting selection, Activity, Volume control.

15 Function keys: can be set to Busy Lamp Field, AltiServ feature code, speed dial, line park, call recording, workgroup status.

Adjustable Speaker/Ring/Handset/Headset volume control

4 x 20 Character LCD Display

Provide features such as time, calling party name, calling party number, digits dialed, extension number, number of new voice mails, DND/FWD, missed calls, and system information.

Hold, Mute, Speaker, Conference, Headset, Intercom.

Message waiting indicator

2 Standard 10/100/1000 Base-T RJ-45 Ports: One for network to phone connection, and one switch port for connection from phone to PC

Flash ROM: 4M, stores boot ROM, software imaging and configuration data, DSP images.

DRAM: 8M, stores runtime program and data.

IP 720 User Manual 33

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AltiGen comm 720 user manual Appendix a, Specifications