If you still think SIP trunking is primarily about cost savings -- guess what? You're still right. The conventional wisdom on SIP trunking was expected to shift over time, in a classic new-technology ...
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What Is SIP Trunking?

Session initiation protocol (SIP) trunking allows any organization to upgrade its offline PBX to an internet-powered business phone system. Business leaders are using this technology to harness VoIP’s ...
Centralizing your WAN architecture is a cornerstone of the strategy for capturing SIP Trunk savings. Cisco says: Keeping a distributed network may be the way to go. The consensus out of the SIP ...