Today
in the telecom market many providers offer services based on VoIP.
Among these providers are of course SIP providers, who offer voice
over IP service and enable calling from SIP phones to
plain-old-telephone lines and vice versa. SIP is the universal
protocol which is used for Internet telephony, and there are numerous
SIP providers worldwide. Almost all of them provide SIP
termination. It is a service that allows users to use VoIP in
order to make outgoing voice calls to external phone networks all
over the world, including public switched telephone network phone
numbers, as well as mobile cellular operators. Tariffs for SIP
termination service usually vary from one SIP
termination provider to another and calling rates vary depending
on destination country, city, also the mobile operator of the
subscriber you are dialing.
