When compared to traditional PRI, SIP Trunking involves many benefits to companies. SIP trunk allows a company to replace traditional fixed PSTN lines with PSTN connectivity via a SIP trunking service provider on the Internet. SIP trunks can offer s...
http://www.ebrahma.com/2013/12/sip-trunking-benefits-for-businesses/Labels: compare-SIP-with-ISDN, cost-saving-with-SIP, SIP-benefits, SIP-trunking, SIP-vs-PSTN