Shenzhen, China – April 17th, 2012--OpenVox Communication Co. Ltd, a global leading provider of the most advanced open source Asterisk® telephony hardware and software products, released the new version of Chan-Extra 2.0.2, updating its GSM application with the Number Filter, making detecting huge quantity of numbers an easy job.
The call centers and other telemarketing business always have to pay for the invalid or busy status number, in either time or charges, maybe both. The OpenVox G400 series telephony cards with the Number Filter, will tremendously reduce the costs. Detection will automatically run as required. Multi-channel is also available and will be a strong enhancement for the executive efficiency of the task. With the Filter, for each extension, the call completing rate will be raised and the labor intensity will be improved.
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