What is SIP ?
"The Session Initiation Protocol (SIP) is an application-layer control (signaling)
protocol for creating, modifying, and terminating sessions with one or more
participants. These sessions include Internet telephone calls, multimedia
distribution, and multimedia conferences." (cit. RFC 3261). It was originally
designed by Henning Schulzrinne (Columbia University) and Mark Handley (UCL)
starting in 1996. The latest version of the specification is RFC 3261 from the
IETF SIP Working Group. In November 2000, SIP was accepted as a 3GPP
signaling protocol and permanent element of the IMS architecture. It is widely
used as signaling protocol for Voice over IP, along with H.323 and others. SIP is
addressing neutral, with addresses expressed as URL/URIs of various types,
such as H.323 address, E.164 telephone numbers or email like addresses.
What is a PBX?
PBX is short for Private Branch Exchange. It's like a private telephone
network deployed in an enterprise. A PBX will share a certain number of
outside lines for making telephone calls. A voice T1 (also known as a PRI)
terminates in a PBX allowing 24 channels of voice to be utilized. A PBX is
essentially a switching mechanism for voice service.
What is VoIP ?
VoIP (Voice over internet protocol ) is the routing of voice conversations over
the Internet or through any other IP-based network , VoIP or Voice over IP
allows you to make telephone calls using a broadband Internet connection .
What is FoIP ?
FoIP, short for fax over Internet Protocol, the technology that enables the
Internetworking of fax machines with a packet-based network. Using FoIP,
a fax is transmitted via the Internet rather than the traditional method of
sending faxes via the telephone line. Using FoIP, the digital data from the
fax machine is separated into packets for transmission (as opposed to the
traditional method of converting the fax data into analog to be sent over
the PSTN). The digital data requires less bandwidth than the analog data,
so FoIP is more efficient than analog faxing.
What are the factors impacting Quality of Service?
Defining standards to measure voice quality in conjunction with availability
detection can enhance VoIP. As a result, a well-managed network plays an
essential role in keeping a VoIP system up and running properly. The
following sections describe two important classifications that should be
considered when defining quality standards for VoIP, latency and jitter.
If you have any question about VoIP , Please send your question to
admin@az-voipproviders.com to receive your answer here .
Best Regards
Milad M
Featured VoIP Provider list