SIP trunking offers substantial cost benefits over PRI (Primary Rate Interface). The flexibility of SIP also means that business growth opportunities, features, presence and integration aren't precluded by dead technology. PRI is dead and was dead almost from its start. "It's some dumb network (ISDN)" is what people in the industry call it.
The PRI is a glorified T1, and the development of ISDN (Integrated Services Digital Network) was primarily for the carrier's benefit. Having used PRI and BRI (Basic Rate Interface) since their inception in the U.S., there's no looking back. Let me explain.
No one can rationally dismiss the cost benefits and savings of SIP trunks over anything that traditional carriers have to offer. I can buy direct inward dialing (DID) numbers when and where I need them in order to expand my business presence without having a local office in that city. The lower cost of doing business with SIP trunks has added benefits: flexible bandwidth and bandwidth management for all my communications needs. Technically speaking, PRIs and T1s are just noisy copper pairs that carry premium price tags.
Unless you live in Australia or some South Pacific locations, BRI isn't faring against SIP trunks since 128 Kbps is no match for the unbridled bandwidth that consumers and businesses demand. What happens when the PRI/BRI or T1 goes down? Businesses have multiple Internet connections that serve as failover -- yet another advantage of SIP trunks. Organizations should leverage bandwidth and harden network infrastructures (if they aren't already) in preparation for kicking out PRI. PRI only profits the carriers.
Dig Deeper on IP Telephony Systems
Related Q&A from Matt Brunk
How does VoIP Quality of Service compare between cable and DSL? Telephony Expert Matt Brunk explains that broadband Internet type doesn't necessarily...continue reading
When it comes to UC and VoIP equipment, there is no one-size-fits-all for enterprises, according to telephony expert Matt Brunk. Brunk explains how ...continue reading
Telecom expert Matt Brunk explains the role FCC regulations play in corporate communications, from Title 47 regulations to issues like net neutrality.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.