03-Aug-2016 12:03

Selecting an IP-phone for Asterisk


When organizing voip telephony in the office and call center, you should choose good IP-phones, which could ensure a comfortable use of the voice. Typically, users have the following requirements to devices:

  • Low cost;
  • Uninterrupted operation;
  • Compatibility with IP PBX (Asterisk is most commonly used software).

IP-phones produced by Cisco and Grandstream meet all these criteria. They are American manufacturers of hardware for VoIP. The product lines present a lot of low-end models that operate well using Asterisk PBX. According to user feedback, IP-telephones can operate smoothly during the working day (about 8 hours).

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Functionality of the IP-phone

Current models of Cisco and Grandstream IP-phones support the following features:

  • Comfort noise generation;
  • Hands-free mode;
  • Conferencing;
  • Web user interface;
  • SIP protocol support;
  • Echo cancellation;
  • Hold a call/standby function.

IP-Phone Setup

For correct operation of IP-phones you must correctly configure the Asterisk IP telephony, including phones themselves. Most models working with Asterisk are set up through a web browser. You should enter the IP-address of the device in the address bar, so you can get to the settings panel. You should create a trunk to connect it to the software PBX and specify audio codecs for voice transmission. According to user feedback, the setup process is not time-consuming and does not require highly specialized knowledge.

Softphones as the IP-phone alternative

You can use software solutions as a replacement for the standard IP-telephony lest you buy the equipment. There is special software that is installed on the computer and performs all the functions of conventional devices. But in order to apply them, you will need to purchase VoIP headset or the so-called USB-phones. Softphones are most often used in the organization of VoIP call centers.

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