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Once you have all these, you’ll be able to make calls within your network. To get in touch with the outside world, you will need one or more SIP channels. SIP stands for Session Instantiation Protocol and is the most common protocol for VoIP on the internet today. SIP trunking providers operate an infrastructure that can route and connect the calls originating from your system to phone numbers on other infrastructures (IP networks or PSTN). Your local telephone company provides one or more trunk lines to the customer for connection to the customer's PBX and allocates a range of telephone numbers to this line (or group of lines) and forwards all calls to such numbers via the trunk.
Management
Managing your Unified Communications network is easier than expected. A single instance of VoipNow runs on a server and serves multiple client organizations or tenants. A service provider can still deploy multiple VoipNow Professional virtual environments on the same physical machine, even if the software is multi-tenant.
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