IP SIP Phone v2
User’s Guide
Mar. 2005
[6/100]
1. Overview
1.1. Features
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DHCP or PPPoE for host IP, gateway, network mask, DNS (optional, 2 DNS at most), TFTP
server, NTP server, and TTL; all those settings could be static assigned as well.
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If provided by DHCP server, it could use DHCP to get NTP server.
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Ear-phone, speaker-phone for hand-free, handset and loud-speaker support (all are volume
adjustable). Changeable ringing tone.
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Supports 2 concurrent calls.
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Multiple service domains for easy access to different ISPs (3 domains at most).
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Address book (up to 500 entries) and call history (10 most recently received calls, 10 most
recently missed calls and 10 most recently dialed numbers).
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Call return, speed dials (20 numbers), redial, auto-redial, call-screening (20 numbers) and
detail records of the latest three calls.
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Call forwarding: configurable forwarding number, unconditionally forward all calls, forward
calls on busy and forward calls on no response (adjustable waiting time).
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Call processing includes: hold (music on hold), mute, Caller ID, Call waiting (alerting tone,
LED indication and screen popup), call transfer (blind transfer, consultative transfer,
semi-supervised transfer, and take-back), call forward, call reject, do not disturb (DND).
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Call preferences include: call waiting, auto-answer (server-side invoked, locally activated
and selectively auto-answer), dial-timeout, adjustable hold recall timer, auto-hold on call
switch, auto-redial criterion (stop-on-ringing or stop-on-connected), accept call diversion or
not, inter-digit time-out, message alerting, and per call Calling Line Identification
Restriction.
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3-way local conferencing
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Message Waiting Indication (MWI)
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180 locally generated ringing and 183 remotely generated call progress tone.
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Out-of-dialog instant messaging, and flashing SMS without user interaction.
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NAT & firewall support by STUN or pre-configured NAT Gateway port mapping;
Auto-update or notify the change of NAT IP by STUN if NAT employs DHCP as well (such
as xDSL dial-up).
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Symmetric RTP flow for cases where only one endpoint is behind a NAT.
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Voice activity detection to reduce network bandwidth consumption.
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Comfort noise generation and dynamic de-jitter buffer to deliver better voice quality.
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8 Programmable DSS keys.
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One-touch dialing (Hot lines)
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Configurable dial-key (#, *, & or dedicated DSS key as
【
Dial-
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key ) to facilitate the
inclusion of “#, *, or &” in dial strings.