Making Calls using IP Addresses

Note: The multi-functional buttons will function as LINE keys when all LINEs are busy. The LED will flash in red to indicate an incoming call. Press the button to pick up the call. If any one of the Multi Purpose Keys is associated with a call, the button’s speed dial/BLF function will not work.

Direct IP calling allows two phones to talk to each other in an ad hoc fashion without a SIP proxy. VoIP calls can be made between two phones if:

•Both phones have public IP addresses, or

•Both phones are on a same LAN/VPN using private or public IP addresses, or

•Both phones can be connected through a router using public or private IP addresses (with necessary port forwarding or DMZ)

To make a direct IP call, please follow these steps:

1.Press MENU button to bring up MAIN MENU.

2.Select “Direct IP Call” using the arrow-keys.

3.Press OK to select.

4.Input the 12-digit target IP address. (Please see example below).

5.Press OK key to initiate call.

To make a quick IP call, please see next section.

For example: If the target IP address is 192.168.1.60 and the port is 5062 (e.g. 192.168.1.60:5062), input

the following: 192*168*1*60#5062 - The “ * ” key represent the dot“.” ; The “#” key represent colon “:”. Press OK to dial out.

Quick IP Call Mode

The GXP also supports Quick IP call mode. This enables the phone to make direct IP-calls, using only the last few digits (last octet) of the target phone’s IP-number.

This is possible only if both phones are in under the same LAN/VPN. This simulates a PBX function using the CMSA/CD without a SIP server. Controlled static IP usage is recommended.

Setting up the phone to make Quick IP calls

To enable Quick IP calls, the phone has to be setup first. This is done through the web-setup function. In the “Advanced Settings” page, set the "Use Quick IP-call mode to YES. When #xxx is dialed, where x is 0-9 and

xxx<=255, a direct IP call to aaa.bbb.ccc.XXX is completed. “aaa.bbb.ccc” is from the local IP address regardless of subnet mask. The numbers #xx or #x are also valid. The leading 0 is not required (but OK).

For example:

192.168.0.2 calling 192.168.0.3 -- dial #3 follow by SEND or # 192.168.0.2 calling 192.168.0.23 -- dial #23 follow by SEND or # 192.168.0.2 calling 192.168.0.123 -- dial #123 follow by SEND or # 192.168.0.2: dial #3 and #03 and #003 results in the same call -- call 192.168.0.3

NOTE: If you have a SIP Server configured, a Direct IP-IP still works. If you are using STUN, the Direct IP- IP call will also use STUN. Configure the “Use Random Port” to “NO” when completing Direct IP calls.

Grandstream Networks, Inc.	GXP User Manual	Page 19 of 44
	Firmware 1.2.5.3	Last Updated: 03/2011

GXP1200, GXP2000, GXP280/GXP285, GXP2020, GXP2010 specifications

The Grandstream Networks GXP2010 is a versatile and reliable SIP telephone designed for small to medium-sized businesses. With its robust feature set and user-friendly interface, the GXP2010 stands out in the world of IP telephony. This model accommodates the growing demand for efficient communication tools while blending seamlessly into various business environments.

One of the defining characteristics of the GXP2010 is its ability to support multiple SIP accounts. It can manage up to four SIP accounts, allowing users to handle multiple lines of communication efficiently. This feature is especially beneficial for organizations that often deal with a high volume of calls or need to maintain different lines for various departments.

The GXP2010 boasts high-definition audio quality, utilizing Wideband CODEC technology to ensure crystal clear voice communication. This technology helps eliminate background noise, producing a more pleasant and professional experience during calls. The device also includes various audio codecs, providing flexibility to suit different network environments.

In terms of design, the GXP2010 features a user-friendly interface with a backlit LCD display that offers intuitive navigation. The phone is equipped with programmable keys, enabling users to customize their experience and access frequently used functions quickly. The inclusion of HD handset and speakerphone capabilities ensures high audio quality regardless of the speaking method preferred by the user.

Furthermore, the GXP2010 supports Power over Ethernet (PoE), simplifying the installation process by reducing the number of cables needed. This feature allows the phone to receive power and network connectivity through a single Ethernet cable, resulting in a more organized workspace.

Security is another priority for Grandstream, and the GXP2010 reflects this focus with advanced encryption protocols for secure communications. The device supports TLS and SRTP for secure signaling and media encryption, safeguarding sensitive business conversations.

The GXP2010 is not only compatible with a variety of SIP-based platforms, but it also includes support for advanced telephony features such as call forwarding, call transfer, and call waiting. This versatility makes it an excellent choice for businesses seeking to streamline their communication processes.

In conclusion, the Grandstream Networks GXP2010 is an ideal solution for businesses looking for a reliable, high-quality SIP phone that combines versatility and advanced technology. Its multiple SIP account support, high-definition audio capabilities, user-friendly design, and strong security measures make it a valuable addition to any modern office environment.