Protocols/standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (record A, SRV,
NAPTR), DHCP, PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x,
TLS, SRTP, IPV6
Network interfaces
Two switchable 10/100/1000 Mbit/s Gigabit Ethernet ports with auto
-negotiation and integrated PoE module
Graphic display
TFT Color LCD Display, 4.3" (480x272)
Wi-Fi
Yes, built-in dual-band Wi-Fi module 802.11 a/b/g/n/ac (2.4 and 5 GHz)
Bluetooth
Yes, the built-in module
Main buttons
12 line buttons with support for up to 16 SIP accounts, 24 universal
expansion keys with pockets for paper inserts, 5 programmable (XML)
contextual touch keys, 5 menu/navigation keys, 8 special keys:
MESSAGE (with LED indicator), TRANSLATION, HEADSET, HOLD,
SOUND OFF, SEND/REDIAL, SPEAKER, THUNDER.+, THUNDER.–
Additional connectors
RJ9 connector for Plantronics Headset EHS Adapter, USB connector for
Grandstream GUV Series headsets and other USB headsets
Voice codecs and features
Supports G7.29A/B, G.711 mic/a-law, G.726, G.722 (broadband), G723, iLBC,
OPUS, in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO)
Telephony functions
Retention, transfer, forwarding, five-participant conference,
call parking, call interception, single internal number (shared call
appearance, SCA), bridged line appearance (BLA) function,
downloadable phone book (XML, LDAP, up to 2000 elements), call waiting
, call log (up to 2000 recordings), XML screen setup, auto-dial when the handset
is picked up, answering machine, call from the website (click-to-dial), flexible configuration of subscriber
groups, support for shared workplace usage, personalization of ringtones
and ringtones on hold, switching to a backup server in case of failure
HD Audio
Yes (HD headset and speaker), with broadband audio support. Two microphones
Expansion Module
No
Rack
Yes, with two tilt angles and wall mount (*Wall mount
is available separately)
Quality of service
Layer 2 (802.1Q, 802.1P), 802.11e (WMM) and Layer 3 (ToS, DiffServ, MPLS)
Safety
Passwords for users and administrators, authentication on the database
MD5 and MD5-session, configuration file with 256-bit AES encryption, SRTP, TLS,
802.1x-based media access control, secure download
Languages
English, German, Italian, French, Spanish, Portuguese,
Russian, Croatian, Chinese, Korean, Japanese and others
Update/Configuration Firmware update via FTP/TFTP/TFTPS/HTTP/HTTPS, mass configuration
using GDMS/TR-069 or XML configuration file with AES encryption
Power supply and energy efficiency
The package includes a universal power adapter:
Input: 100-240 V; Output: +12V, 1 A;
Integrated Power-over-Ethernet Module (802.3af)
IEEE 802.3az Ethernet Energy Efficiency
Maximum power consumption: 3.2W (power adapter) or 4.3W (PoE)
Temperature and humidity
Operation: from 0 to 40 °C
Storage: -10 to 60 °C
Humidity: 10 to 90%, non-condensing
Package Contents
GRP2636 phone, Wired Headset, Stand, 12V Power Adapter,
Network Cable, Quick Installation Guide, GPL license
Physical characteristics
Dimensions: 220 × 210 × 82 mm
Device weight: 880 g; package weight: 1260 g
