Administrator's Manual
7. Specifications
Version 1.4
107
July 2010
7 Specifications
Table
7-1: 320HD IP Phone Specifications
Feature
Details
VoIP Signaling Protocols
SIP: RFC 3261, RFC 2327 (SDP)
Data Protocols
IPv4, TCP, UDP, ICMP, ARP, DNS and DNS SRV for SIP Signaling
SIP over TLS (SIPS)
802.1p/Q for Traffic Priority and QoS
ToS (Type of Service) field, indicating desired QoS DHCP Client
DHCP Client
NTP Client
Media Processing
Voice Coders: G.711, G.723.1, G.729A/B, G.722
Acoustic Echo Cancelation: G.168-2004 compliant, 64-msec tail length
Adaptive Jitter Buffer 300 msec
Voice Activity Detection
Comfort Noise Generation
Packet Lost Concealment
RTP/RTCP Packetization (RFC 3550, RFC 3551)
DTMF Relay (RFC 2833)
Telephony Features
Call Hold / Un Hold
Call Transfer
3-way Conference (with local mixing)
Redial
Caller ID Notification
Call Waiting Indication
Message Waiting Indication (including MWI LED)
Local and Corporate Directories
Automatic On-hook Dialing
CWRR (Call Waiting Reminder Ring)
Secondary Dial Tone
Call Logs: Missed/Received Calls and Dialed Numbers
Speed Dial (including BLF support for Asterisk and BroadWorks
TM
)
Dial Plan
Call Forward (Unconditional / Busy / No answer)
Redundant SIP Proxy Mechanism
Multiple Line (Currently support up to 4 lines)
Summary of Contents for 300HD Series
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