VoIP reduces costs of voice calls considerably but the service comes at a price. The cost involves start up expenditure, hardware and software price and monthly rental. Add to it the call charges for international and local calls. But sip trunk costs are more affordable in comparison to traditional phone service.
For VoIP service, you can establish a trunk with a service. The trunk will connect your PBX system with the VoIP infrastructure of the service provider. You will be able to take advantage of the VoIP service with the help of the trunk. Also you will take advantage of session initiation protocol service that will reduce your sip trunk costs considerably.
VoIP charges are levied per user per month. A fixed monthly rental is paid for the service and a fixed amount is charged for outgoing calls. The amount could be fixed at 1.25p per minute or less depending on the monthly service. The VoIP service provider can be classified into standard and premium. There could be more options as the services are customized to suit individual needs. Service providers want to keep sip trunk costs lowest for benefit of their customers.
If you want to take advantage of VoIP service then you should first shop around to locate leading service providers and then you should compare their services to find the most affordable service provider. You would know that sip trunk costs vary from one service to another. Standard service is basic service but premium service is exclusive.