$25 Per Month
UNLIMITED calling to the United States and Canada.
SIP trunking is provided by SIP providers, which are similar to traditional phone companies, except SIP providers give access to phone lines over the internet. This means that 1 SIP trunk allows for 1 simultaneous call. As a rule of thumb, 1 sim. call per 3-4 extensions is sufficient (33% rule for a normal retail or office environment).