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What is SIP trunking?

A SIP trunk is the digital version of an analog phone line. Learn how you can upgrade to a unified digital phone system for ...
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SIP Trunking Equipment Problems Also Persist

Issues relating to the IP-PBX or SBC may also hamper SIP Trunk performance. Like the problems with SIP trunking service providers, which we discussed last week, problems with the equipment used in SIP ...