Product Specifications
Lines (Direct Numbers)
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Up to six lines (standalone mode)
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Up to 24 concurrent calls
Expansion Module Mode
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Up to 48 line keys/appearances
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Up to 47 remote party BLF line monitors
■
Up to 34 SIP registrations
SoundPoint IP Expansion Module Support
■
Supports up to three Expansion Modules
Display
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320 x 160 backlit grayscale graphical LCD
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White LED backlight with custom intensity control
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Message Waiting Indicator (MWI) LED
Feature Keys
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4 context-sensitive “soft” keys
■
26 dedicated “hard” keys
o
6 line keys with bi-color (red/green) LED
o
8 feature keys
o
6 display/menu navigation keys
o
2 volume control keys
o
Illuminated mute key
o
Illuminated headset key
o
Illuminated hands-free speakerphone key
o
Dedicated hold key
Headset and Hearing Aid Compatibility
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Dedicated RJ-9 headset port
o
Amplified headsets are recommended
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Compliant with ADA Section 508 Recommendations:
Subpart B 1194.23 (all)
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Hearing Aid Compatible (HAC) handset for magnetic
coupling to approved HAC hearing aids
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Compatibility with commercially-available TTY
adapter equipment
Audio Features
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HD Voice technology delivers life-like voice quality
for each audio path - the handset, the hands-free
speakerphone, and the headset1
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Full-duplex hands-free speakerphone
o
Type 1 compliant with IEEE 1329 full
duplex standards
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Frequency response: 150Hz - 7kHz for handset,
headset1 and hands-free speakerphone modes
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Codecs: G.722 (wideband), G.711 μ/A, G.729A
(Annex B) and iLBC
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Individual volume settings with visual feedback for
each audio path
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Voice activity detection
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Comfort noise fill
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DTMF tone generation/DTMF event RTP payload
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Low-delay audio packet transmission
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Adaptive jitter buffers
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Packet loss concealment
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Acoustic echo cancellation
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Background noise suppression
Call Handling Features
2
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Shared call/bridged line appearance
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Flexible line appearance (one or more line keys can
be assigned for each line extension)
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Busy Lamp Field (BLF)
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Distinctive incoming call treatment/call waiting
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Call timer
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Call transfer, hold, divert (forward), pickup
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Called, calling, connected party information
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Local three-way conferencing
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One-touch speed dial, redial
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Call waiting
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Remote missed call notification
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Intercom
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Automatic off-hook call placement
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Do not disturb function
High Performance IP Phone with HD Voice
ADTRAN IP 650
