Grandstream Networks GXP21 Series User Manual page 9

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Graphic Display
Bluetooth
Feature Keys
Voice Codec
Auxiliary Ports
Telephony
s
Sample Applications
HD audio
Base Stand
Wall Mountable
Page 9
4.3 inch (480×272) TFT color LCD
Yes, Bluetooth V2.1
6 line keys with up to 6 SIP accounts, 24 speed-dial/BLF
extension keys with dual-color LED, 5 programmable contexts
sensitive softkeys, 5 navigation/menu keys, 11 dedicated
function keys for: MESSAGE (with LED indicator),
PHONEBOOK, TRANSFER, CONFERENCE, HOLD,
HEADSET, MUTE, SEND/REDIAL, SPEAKERPHONE,
VOLUME+, VOLUME –
Support for G.729A/B, G.711µ/a-law, G.726, G.722 (wide-
band), iLBC(pending) and in-band and out-of-band DTMF (in
audio, RFC2833, SIP INFO)
RJ9 headset jack (allowing EHS with Plantronics headsets),
USB
Hold, transfer, forward, 5-way conference, call park, call pickup,
shared-call-appearance (SCA)/bridged-line-appearance (BLA),
downloadable phonebook (XML, LDAP, up to 2000 items), call
waiting, call log (up to 500 records), customization of screen,
off-hook auto dial, auto answer, click-to-dial, flexible dial plan,
Hot Desking, personalized music ringtones and music on hold,
server redundancy and fail-over
Weather, GMI available for advanced custom application
development
Yes, both on handset and full-duplex handsfree speakerphone
Yes, allow 2 angle positions
Yes
Grandstream Networks
GRANDSTREAM NETWORKS