Asterisk Vs Cisco / Avaya Voip Telephone Systems
Asterisk Vs Cisco / Avaya Voip Telephone Systems
VoIP or Voice Over IP, the most recent in wireless communication functions by taking the call, changing from analog to digital signals and transmitting these signals over an IP network or broadband and lastly terminating it over a PSTN. Call charges are reduced using this technology. The advantage is always that software emulating a mobile phone can be loaded in your laptop thereby enabling you to access its services even when you travel.
VoIP uses SIP (Session Initiation Protocol), a peer-to-peer technology that enables computers to convey with each other with out calls routed through some central station. Therefore, calling derived from one of SIP enabled phone to a different cuts call charges drastically.
The Asterisk System comes with a Asterisk server which manages such things as teleconferencing, voice mails, queues and hold music. The hard phone can be a digital phone containing an Ethernet jack to communicate with the server while using the SIP protocol. They, such as the wireless version, aren't very expensive. The soft phone are implemented in software and could be attached to a PC. Asterisk runs predominantly on Linux, a wide open source operating-system.
Cisco has telephony solutions that are network based and run on a router. They are scalable and work well in multi-user environments in mulitple locations. The UC500 suite can be a bundle of services like router, switches, security, telephony and wireless functionality in one device. This greatly reduces costs for a corporation which is thinking about these services. The Cisco CallManager Express uses SIP for connecting phones with the Internet and also has the characteristics of UC 500 rendering it more viable for medium scale businesses. Additonal features are paging, intercom, ICMP and class of restrictions on the users calls.
Avaya IP Office uses IP technology to offer voice and data communication, messaging and customer management over multiple locations with 2 to 300 people. It lets you work everywhere, host conferences, integrate applications, measure and improve client satisfaction at the touch of your mouse. It is economical as it lowers long-distance calls, conferencing fees, supports remote workers helping keep your business collaborated and up-to-date.
The three products may be compared depending on the following few criteria:
* Number of extensions: Asterix supports upto 100 extensions while Cisco and Avaya will go upto 360 extensions thereby suporting large organizations too. This adds to the scalability helping to reduce costs ultimately.
* Freeware: Asterisk is freeware and runs on a Linux server. This makes the telephony solution less than either Cisco or Avaya which can make extensive use of routers and switches for communication.
* Installation and maintenance: Asterisk can be a programmers dream since it is open source and could be changed at his will. However, for an end-user, it may be a nightmare. Support and services are better with Cisco and Avaya that happen to be established names in the market.
The main thing opting for Asterisk is your buck. However, it is not always preferable to look on the initial expense of things. Other criteria like scalability, integrating of just one device web-sites already existing, interoperatability and long run costing should be thought about while choosing one product over another.
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