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