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Grandstream Networks, Inc. GXP User Manual Page 11 of 38
Firmware 1.1.6.44 Last Updated: 12/2008
SPEAKERPHONE Yes Yes Yes Yes Yes
SEND Yes Yes Yes Yes Yes
TRANSFER Yes Yes Yes Yes Yes
CONF Yes Yes Yes Yes Yes
MUTE Yes Yes Yes Yes Yes
DND Yes Yes Yes Yes Yes
HEADSET Yes Yes Yes Yes Yes
INTERCOM No No No Yes Yes
PHONEBOOK No No No Yes Yes
MSG Yes Yes Yes Yes Yes
MENU Yes Yes Yes Yes Yes
NAVIGATION (4) Yes (3) Yes Yes Yes Yes
Device
Management
NAT-friendly remote software upgrade (via TFTP/HTTP) for deployed devices
including behind firewall/NAT
Auto/manual provisioning system, GUI Interface
Support Layer 2 (802.1Q, VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS)
Expansion interface, Address Book
Audio Features
Full-duplex hands-free speakerphone, headset enabled
Advanced Digital Signal Processing (DSP)
Dynamic negotiation of codec and voice payload length
Support for G.723,1 (5.3/6.3K), G.729A/B, G.711 a/µ-law, G.726-32, G.722 (wide-
band), GSM and iLBC codecs
In-band and out-of-band DTMF (in audio, RFC2833, SIP INFO)
Silence Suppression, VAD (voice activity detection), CNG (comfort noise
generation), ANG (automatic gain control)
Acoustic Echo Cancellation (AEC) with Acoustic Gain Control (AGC) for
speakerphone mode, Support side tone
Adaptive jitter buffer control (patent-pending) and packet delay & loss concealment
Telephony
Features
Intuitive graphic user interface (GUI), downloadable phone book (XML, LDAP),
support for anonymous call using privacy header, MLS (multi language support)
Voice mail indicator, downloadable custom ring-tones, call hold, call transfer
(attended/blind), call forward, call waiting, caller ID, mute, redial, call log, caller ID
display or block, Do-Not-Disturb (DND) and volume control
Multi-party conferencing (up to 5), dial plan prefix, off-hook auto dial, auto answer,
early dial and speed dial (on some models)
Network and
Provisioning
Via keypad/LCD, Web browser, or secure (AES encrypted) central configuration file,
manual or dynamic host configuration protocol (DHCP) network setup
Support NAT traversal using IETF STUN and Symmetric RTP
Support for IEEE 802.1p/Q tagging (VLAN), Layer 3 TOS
Firmware
Upgrades
Support firmware upgrade via TFTP or HTTP,
Support for Authenticating configuration file before accepting changes
User specific URL for configuration file and firmware files
Advanced
Server Features
Message waiting indication, support DNS SRV Look up and SIP Server Fail Over,
Support customizable idle screen via downloading XML by HTTP/TFTP
Security DIGEST authentication and encryption using MD5 and MD5-sess, SRTP, SIP over
TLS (pending)