The term “SIP Provider” indicates different factors depending on who is using
it. It has its roots in “SIP Trunking”,
which is an assistance offered to organizations that allows them to join their
in-house IP PBX systems to the
outside world .
Without SIP Trunking, devices within a PBX can only talk to other devices
on the same system. ITSP (The Internet Telephony Service Provider) gives
their clients a pipe or a “trunk”, which makes the connection to the PSTN,
thereby considerably helping the accomplishment and efficiency of their PBXs.
Hosted PBX
While a SIP trunk only suits the
organizations which already have their own IP
PBX system and are ready to get connected o the PSTN, the latest recreate
of SIP providers do not need their
clients to have something else but cell phones. These ITSPs have their own PBXs
hosted on their web servers and allow organizations to make use of them,
offering VoIP alternatives at extremely low expenses. 'Hosted PBX' alternatives come with built-in connections to the
PSTN system, eliminating their clients' need to buy the “trunking”
individually.
Extra Benefits for Hosted SIP Customers
SIP hosting puts the key benefits of the
technology within the reach of organizations that have no SIP features of their own. Next to the ability to make VoIP calls,
organizations can get SIP accounts
to distribute to their employees, which allows anyone using a SIP system to get in touch with them for
free, as long as they know the SIP cope with associated with that account
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