Grandstream GRP2601, Carrier-Grade IP Phones, 2 lines, 2 SIP accounts, Dual 10/100 Mbsps Ethernet ports, (with power supply)

Protocols/standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, RTCP-XR, HTTP/HTTPS, ARP, ICMP, DNS
(record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP,
TR-069, SNMP, 802.1x, TLS, SRTP, IPv6

Network interfaces
Two 10/100 Mbps switched Ethernet ports with automatic
detection, built-in PoE power supply (GRP2601P model only)

Wi-Fi
GRP2601W, single frequency, 2.4GHz, 802.11 b/g/n/ax (2.4G only)

Graphic display
LCD display with a resolution of 132 x 48 (2.41 inches)

Function buttons
Four programmable context-sensitive XML on-screen keys, five keys
(navigation, menu). Eight special function keys: MESSAGE
(with LED indicator), TRANSMISSION, HEADSET, MUTE,
sending/REDIAL, LOUD FREEDOM MODE, VOLUME+,
VOLUME

Codecs and voice functions
Support G.729A/B, G.711µ/a-law, G.726, G.722 (Broadband), G.723, iLBC, OPUS,
DTMF in-band and out-of-band (audio input, RFC2833, SIP INFO), VAD, AEC, CNG,
PLC, AGC, AYB

Phone Functions
Hold, redirect, transfer, five-way conference,
parking calls, answering calls, phonebook (XML, LDAP,
maximum 2000 positions) can be downloaded, waiting for a call, register
calls (max. 800 entries), automatic dialing without lifting the handset
headphones, answering machine, one-click dialing,
flexible dialing plan, hot table service, personalized
music ringtones and call waiting music, server backup and
backup power

Auxiliary ports
RJ9 headphone jack (provides EHS function for kits
Plantronics, Jabra and Sennheiser headsets)

Rack
Yes, can be installed at one angle (45°), wall mounting (
wall mounting bracket, sold separately*)
QoS QoS level 2 (802.1Q, 802.1P) and QoS Level 3 (ToS, DiffServ, MPLS)

Safety
User and administrator level passwords, authentication using
MD5 and MD5-sess algorithms, encrypted configuration file (AES standard).
256 bits), SRTP, TLS, access control to the 802.1x transmission medium, secure boot

Multilingual support: English, Chinese, Korean, Japanese, German, Italian, French, Spanish,
Portuguese, Russian, Croatian and others

Update/Remote Configuration
Firmware update via FTP/TFTP/HTTP/HTTPS, mass
remote configuration using GDMS/TR-069 protocol or configuration file
XML encrypted with AES

Power and energy saving
Universal power supply, input voltage 100-240 V AC, 50-60 Hz; output +5 V DC, 600 mA;
PoE: IEEE802.3af, Class 1, 3.84 W; IEEE802.3az (EEE) (GRP2601P only)

Temperature and humidity
Operation: from 0°C to 40°C
Storage: -10°C to 60°C.
Humidity: from 10% to 90% without condensation.

Package contents
Phone GRP2601/2601P/GRP2601W, handset with cable, stand,
universal power supply (GRP2601 model only), network cable, quick
installation guide

Physical properties
Dimensions: 208 mm (L) × 180 mm (W) × 63.4 mm (H) (with handset)
Device weight: 650 g; total weight 810 g (860 g for GRP2601 model)