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As a first step to lower telephony costs and increase productivity for the city's offices the internal communications infrastructure can be replaced with a VoIP infrastructure which will utilize the private network for calls between sites. The VoIP solution chosen should be based upon open standards so that it can later integrate seamlessly with the service offering the city plans to offer to its residents and businesses.
For the city government offices a SIP based solution such as the one from Zultys can be used. The Zultys solution allows for voice, video, fax and data communications between offices and integrates features such as presence and instant messaging. This will reduce costs and boost productivity within the city government.
To become an Internet Telephony Service Provider for residents and businesses within the city you can talk to companies such as Sonus and Broadsoft. These companies make products that allow SIP connectivity to businesses and residences and also have the ability to connect to the existing PSTN. These companies have worked with many Internet Telephony service providers to improve their offering.
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