IP 720 User Manual 33
Appendix ASpecifications
Network
Protocols •SIP, RTP, RTCP, TFTP, TCP, UDP, DHCP, DNS, ARP, ICMP,
Telnet
Call Control
Protocols •SIP
Audio
Standards •Codec: ITU G.711 (PCM), two low bit rate (G.723.1 and G.729A
/ G.729AB)
•Acoustic Echo cancellation supporting high-quality
speakerphone
•Full-duplex
Keypad
Features &
Handset
•12 standard dialing keys: 0-9, *, #
•16 feature keys: Redial, Hang-up/Release, Hold, Intercom,
Speaker, Mute, Headset, Flash, Speed dial, Tr ansfer, Con ference,
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
LCD •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.
LED •Hold, Mute, Speaker, Conference, Headset, Intercom.
•Message waiting indicator
LAN •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
Memory •Flash ROM: 4M, stores boot ROM, software imaging and
configuration data, DSP images.
•DRAM: 8M, stores runtime program and data.