Table 7: Gxp Technical Specifications - Grandstream Networks GXP2000EXT Manual

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Table 7: GXP Technical Specifications

Lines
Protocol
Support
Display
Feature
Keys
Device
Management
Audio
Features
Telephony
Features
Grandstream Networks, Inc.
Multiple direct lines with independent SIP accounts, programmable speed dial keys,
XML programmable soft-keys (non programmable on GXP-280/285, GXP1200, GXP2000).
Support SIP 2.0, TCP/UDP/IP, PPPoE, RTP/RTCP, SRTP by SDES, HTTP, ARP/RARP,
ICMP, DNS, DHCP, NTP, TFTP, SIMPLE/PRESENCE protocols
Supports multiple SIP accounts
Supports SIP PUBLISH method (RFC 3903), SIP Presence package (RFC 3856, 3863) for
use of 7 MFKs, SIP Dialog package (RFC 4235)
Supports SIP MESSAGE method (RFC 3428)
Stores up to 100 incoming IM messages
Back-lit graphic LCD display. (GXP-280/285 display is not back-lit)
GXP-280/285
HOLD
SPEAKERPHONE
SEND
TRANSFER
CONF
MUTE
DND
HEADSET
INTERCOM
PHONEBOOK
MSG
MENU
NAVIGATION (4) Yes (3)
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
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), AGC
(automatic gain control)
Acoustic Echo Cancellation (AEC) with Automatic Gain Control (AGC) for speakerphone
mode, Support side tone
Adaptive jitter buffer control and packet delay & loss concealment
Intuitive graphic user interface (GUI), downloadable phone book (XML, LDAP), support for
anonymous call using privacy header, MLS (multi language support)
Voice mail indicator,
GXP-1200
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
No No
No No
Yes Yes
Yes Yes
Yes
downloadable custom
GXP User Manual
Firmware 1.2.5.3
GXP-2000 GXP-2010
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
No Yes
No Yes
Yes Yes
Yes Yes
Yes Yes
ring-tones, call hold,
Page 11 of 44
Last Updated: 03/2011
GXP-2020
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
call transfer