With SIP Trunking, you don’t have to maintain two separate networks—one for data and another one for phone calls—thus, the cost of infrastructure is much less than legacy connection. Plus, IP hardware has a much longer lifespan than legacy connection, so investments made into the technology bring a higher ROI at a lower price. All you need for SIP is sufficient broadband internet bandwidth, which means you can operate virtually from anywhere without the need for investing in a physical office space or building.

For a business with multiple locations, SIP pooling aggregates concurrent usage across all sites, which means you don’t have to overspend by buying enough capacity at every individual site for that site’s peak usage. A business, for example, with 10 contact centres and a peak concurrent call capacity of 40 would need to invest in 400 trunks using legacy connections. With SIP Pooling, trunks for multiple locations can be pooled as one unified resource.


Because SIP relies on data transfer, rather than physical equipment, implementation and usage are more flexible than legacy connectivity. Installing and upgrading SIP trunks can be done quickly and easily without the purchase of expensive new hardware. SIP works with existing phone systems, plus it can be used to integrate new technologies to your communications suite. In contrast, most legacy phone systems have a maximum number of phones they are able to support before having to add additional ports to a business telephone system, also known as a private branch exchange or PBX

Global Coverage

A SIP signal is controlled like data, so phone numbers are not determined by the location of equipment. A company headquartered in Tokyo, Japan can have a local number for satellite offices in Los Angeles and London. Phone calls can also be rerouted easily regardless of the location of the receiver.


With SIP, your company can have two or more predetermined IP addresses or phone numbers to failover incoming calls to. For example, you can pre-program your company’s incoming calls to route to: (1) your company’s dedicated SIP circuit; Then (2) your company’s primary Internet connection; Then (3) your company’s backup Internet connection; And then (4) another company site or phone number.

Since calls are typically forwarding to a public Internet connection, there isn’t a limit on the number of simultaneous calls that your company is able to forward with SIP Trunking. When SIP calls are forwarded, they can keep
their digital inward dialing (DID) numbers, virtual numbers that allow you to route calls to your existing telephone lines. This is a great feature if you have a lot of employees with DID’s and incoming call routing is critical to your business.

Simple Maintenance

Legacy connections are harder to manage and maintain. SIP Trunking offers easy-to-use administrative portals for on-site management, including actions like adjusting call routing, changing extensions, or adding phone lines fully on-demand.