
Administrator's Manual
7. Specifications
Version 1.4.1
113
February 2011
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
VLAN Discovery Mechanism (CDP, LLDP)
ToS (Type of Service) field, indicating desired QoS DHCP Client
NTP Client
Media Processing
Voice Coders: G.711, G.723.1, G.729A/B, G.722, RTA.
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), SRTP (RFC 3711)
DTMF Relay (RFC 2833)
Telephony Features
Call Hold / Un-Hold
Call Transfer
3-Way Conferencing (with local mixing)
Redial
Caller ID Notification
Call Waiting Indication
Message Waiting Indication (including MWI LED)
Local and Corporate Directories
Automatic On-hook Dialing
Automatic Answering (Alert-Info header and "talk" event)
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 Lines for 320HD (currently supports up to 4 lines)
Содержание 320HD
Страница 2: ......
Страница 8: ...320HD IP Phone Administrator s Manual 8 Document LTRT 08108 Reader s Notes...
Страница 12: ...320HD IP Phone Administrator s Manual 12 Document LTRT 08108 Reader s Notes...
Страница 22: ...320HD IP Phone Administrator s Manual 22 Document LTRT 08108 Reader s Notes...
Страница 102: ...320HD IP Phone Administrator s Manual 102 Document LTRT 08108 Reader s Notes...
Страница 115: ...Administrator s Manual 7 Specifications Version 1 4 1 115 February 2011 Reader s Notes...