Grandstream GXP2135, 8-line, Enterprise HD IP Phone, Bluetooth, 320×240 TFT color LCD, dual GigE ports with 802.3af PoE, (with power supply)

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Protocols/standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS(A record,
SRV, NAPTR), DHCP, PPPoE, SSH, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP,
LDAP, TR-069, 802.1x, TLS, SRTP*, IPV6, CDP/SNMP/RTCP-XR

Network interfaces
Two switched Ethernet ports 10/ 100/ 1000 Mbps with automatic
recognition and built-in PoE support

Graphic Display
2.8 inch (320×240) TFT color LCD

Bluetooth
Yes, built-in

The keys
8 keys, up to 4 SIP accounts, 4 context-sensitive programmable keys, 5 navigation/menu keys, 11 special
keys for the following functions: MESSAGE (WITH LED
INDICATOR), PHONE BOOK, TRANSFER, CONFERENCE,
HOLD, HEADSET, MUTE, SEND/
REDIAL, SPEAKERPHONE, VOLUME +, VOLUME –

Support for voice codecs
Support G.729A/B, G.711µ/a-law, G.726, G.722 (broadband),
G723.1, iLBC, Opus, in-band and out-of-band DTMF signals (in
audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC
Auxiliary ports Headset with RJ9 connector (which allows the use of EHS with
Plantronics headsets)

Phone Functions
Call Hold, Transfer, Call Redirection, 4-way
conference, Call parking, Call Interception, General
Call Indication (SCA) / Call Interception (BLA), Downloadable phonebook
(XML, LDAP, up to 2000 entries), Call waiting, Call history (up
to 500 entries), XML screen setup, auto-dial when the handset is off,
answering machine, mouse-click dialing, flexible number plan, "hot"
workplace, personal ringtones and music for standby mode,
server backup and switching in case of failure.

HD Audio
Yes, HD tube and speaker with broadband audio support

Base stand
Yes, 2 corner positions are available, it is possible to mount on the wall

QoS
Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS

Safety
Passwords at the user and administrator level, authentication
MD5 and MD5-sess, a 256-bit configuration file protected by an algorithm
AES, SRTP*, TLS, 802.1x media access control

Multi-language support
English, German, Italian, French, Spanish,
Portuguese, Russian, Croatian, Chinese, Korean, Japanese.

Update/ Promotion
Firmware update via TFTP/HTTP/HTTPS, mass
connection using TR-069 or AES encrypted
XML configuration file, FTP/FTPS

Nutrition and energy efficiency
Universal Power Adapter: Input: 100-240V; Output: +12V, 0.5A;
Built-in power supply function via Ethernet(802.3af) Maximum
power consumption: 6.4W(power adapter) or 6.49W (PoE)

Physical properties
Dimensions: 201mm(W) x 193mm(L) x 85mm(H); Weight of the device:0.85 kg; Package weight: 1.12 kg

Temperature and humidity
Operating conditions: from 0°C to 40°C, Storage from -10°C to 60°C,
humidity: from 10% to 90% without condensation

Package contents
GXP2135 phone, handset with cord, base, universal power
supply, network cable, quick installation guide, license
GPL

Compliance with the requirements of compatibility standards:
FCC: Part 15 (CFR 47) Class B CE: EN55022 Class B; EN55024 Class
B;EN61000-3-2; EN61000-3-3;EN60950-1 RCM: AS/ACIF S004; AS/NZS CISPR22/24; AS/NZS 60950.