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Humidity
Compliance
Table 7: GXP21xx Technical Specifications
Lines
Protocol Support
Display
Feature Keys
Device Management
Audio Features
Grandstream Networks, Inc.
Multiple direct lines with independent SIP accounts, programmable speed dial
keys, XML programmable soft-keys
Support SIP RFC3261, TCP/IP/UDP, RTP, HTTP/HTTPS, ARP/RARP, ICMP,
DNS (A record, SRV and NAPTR), DHCP (both client and server), PPPoE,
TELNET, TFTP, NTP, STUN, SIMPLE, 802.1x, TR-069
Support multiple SIP accounts
Support SIP PUBLISH method (RFC 3903), SIP Presence package (RFC
3856, 3863) for use of MFKs, SIP Dialog package (RFC 4235)
Support for SIP MESSAGE method (RFC 3428)
Backlit graphic LCD display, up to 8 level grayscale
Feature keys on different models:
GXP2120
HOLD
Yes
SPEAKERPHONE
Yes
SEND
Yes
TRANSFER
Yes
CONF
Yes
MUTE
Yes
DND
Yes
HEADSET
Yes
INTERCOM
Yes
PHONEBOOK
Yes
MSG
Yes
MENU
Yes
NAVIGATION (4)
Yes
NAT-friendly remote software upgrade (via TFTP/HTTP) for deployed devices
including behind firewall/NAT
Auto/manual provisioning system, Web GUI Interface
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), 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
GXP21xx User Manual
Firmware version: 1.0.1.110
10% – 90% (non-condensing)
FCC / CE / C-Tick
GXP2110
GXP2100
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Page 9 of 48
Last Updated: 01/2012
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