What is SIP trunking?
Session initiation protocol (SIP) is the technology and the standard that empowers Voice over Internet Protocol (VoIP) within modern businesses. SIP trunking is the process by which this technology is applied to VoIP systems: SIP trunks replace traditional telephony trunks to bring enhanced communications to both IP networks and legacy systems.
Save money with SIP trunking
By partnering with a SIP trunk provider, you can achieve automated and streamlined routing, offer higher-quality employee experiences, and also enable significant savings.
- Limit capital expenditures. SIP trunking allows you to add upgraded functionality to your legacy phone system without replacing an entire system
- Add reliability. By deploying features from the cloud, SIP trunking ensures business continuity and productivity
- Lower TCO. By getting rid of voice and data hardware systems, SIP trunking can lower your total cost of ownership
- Customizable. Only pay for the call paths you need instead of being forced to install (and pay for) an entire PRI.
SIP trunking enables cloud communications with high-speed internet
With SIP trunk over a high-speed internet, you can access Vonage cloud capabilities on your traditional PBX. You can even keep your phones. As a top SIP trunk provider, Vonage Business offers private SIP interoperability with Cisco® Call Manager, Avaya®, Asterisk®, Zultys®, and more.
More scalability, call trafficking, and disaster recovery
Many primary rate interface (PRI) systems require the purchase of 23 channels at a time. SIP trunks can be purchased individually so scaling up or down is simple. As a top SIP trunk provider, we also design solutions to handle high call volume and automatic call rerouting, vital to your service if there’s problem on a circuit.
SIP VS. PRI
Vonage SIP Trunks
Virtual connection (voice & data transmission)
One at a time purchase (good scalability)
Business continuity/disaster recovery via automatic call rerouting in the cloud
Little to no hardware investment for deployment
Traditional PRI Systems
Physical connection over a dedicated line (only voice transmission)
Requires purchase of up to 23 channels at a time
Call diversion and rerouting possible (complex setup and expensive maintenance)
Up-front investment in hardware for deployment
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