Adaptive jitter buffer control (patent-pending) and packet delay & loss

 

concealment

 

HD audio handset with HD wideband audio codecs for excellent double-talk

 

performance.

Telephony Features

Intuitive graphic user interface (GUI), downloadable phone book (XML, LDAP),

 

support for anonymous call using privacy header, MLS (multi-language

 

support)

 

Voice mail indicator, downloadable custom ring-tones, call hold, call transfer

 

(attended/blind), call forward, call waiting, caller ID, mute, redial, call log, caller

 

ID display or block, Do-Not-Disturb (DND) and volume control

 

Multi-party conferencing (up to 5), dial plan prefix, dial-plan support, off-hook

 

auto dial, auto answer, early dial and speed dial

Network and

Via keypad/LCD, Web browser, or secure (AES encrypted) central

Provisioning

configuration file, manual or dynamic host configuration protocol (DHCP)

 

network setup

 

Support NAT traversal using IETF STUN and Symmetric RTP

 

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

 

MPLS)

Firmware Upgrades

Support firmware upgrade via TFTP or HTTP

 

Support for Authenticating configuration file before accepting changes

 

User specific URL for configuration file and firmware files

 

Mass provisioning using TR-069 or encrypted XML configuration file

Advanced Server

Message waiting indication, support DNS SRV Look up and SIP Server Fail

Features

Over, Support customizable idle screen via downloading XML by HTTP/TFTP

Security

User and administrator level passwords, MD5 and MD5-sess based

 

authentication, AES based secure configuration file, SRTP, TLS, 802.1x

 

media access control

Grandstream Networks, Inc.

GXP21xx User Manual

Page 10 of 41

 

Firmware version: 1.0.1.66

Last Updated: 05/2011

Page 11
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Grandstream Networks GXP21XX Telephony Features, Network, Provisioning, Firmware Upgrades, Advanced Server, Security

GXP21XX specifications

Grandstream Networks GXP21XX series is a line of high-performance VoIP (Voice over Internet Protocol) desktop IP phones designed to deliver a versatile communication experience for both small and medium-sized businesses as well as large enterprises. The GXP21XX series encompasses a range of models, including the GXP2130, GXP2140, and GXP2160, each offering distinct features and capabilities to cater to various user needs.

One of the main features of the GXP21XX series is its support for high-definition (HD) voice technology. This ensures crystal-clear audio quality during calls, enhancing the overall communication experience. HD voice is complemented by advanced echo cancellation and noise reduction technologies, making it easy to communicate even in bustling environments.

The GXP21XX series boasts a user-friendly interface supported by a large LCD display, which is designed for easy navigation and menu access. These phones offer programmable keys, allowing users to customize their devices for quick access to frequently used features, including speed dials and call transfers.

In terms of connectivity, the GXP21XX series is equipped with dual Gigabit Ethernet ports, facilitating high-speed connections to both the local network and the internet. This allows for seamless integration into existing infrastructures without compromising call quality or network performance. Additionally, the phones support Power over Ethernet (PoE), enabling straightforward installation without the need for additional power sources.

The phones come pre-loaded with a multitude of voice codecs, including G.722, G.711, and G.729, offering flexibility to adapt to various network conditions. Users can enjoy secure communication through built-in security encryption features, such as TLS and SRTP, ensuring sensitive data remains safeguarded.

Moreover, the GXP21XX series incorporates advanced functionalities, such as support for up to six SIP accounts, call presence, and a full-duplex speakerphone, making them ideal for multi-tasking and collaborative environments. Interoperability with major VoIP platforms enhances compatibility, ensuring that users can easily integrate their devices into diverse communication systems.

In conclusion, the Grandstream GXP21XX series stands out as a robust and feature-rich solution for VoIP communication. With its focus on HD voice quality, user-friendly interface, and advanced connectivity options, it provides a comprehensive tool for enhancing both individual and team productivity. Whether used in an office environment or for remote work, the GXP21XX series delivers reliability and performance tailored to the needs of today’s business communication landscape.