FAQ
What is ECHO cancellation?
Echo cancellation is the process of removing echo from a voice communication in order to improve the voice call quality. Echo cancellation is often needed because speech compression techniques and packet processing delays generate echo. There are 2 types of echo: acoustic echo and hybrid echo. Echo cancellation not only improves quality but it also [...]
0 comments | ContinuedWhat is RTP – Real Time Transport Protocol?
RTP – short for Real Time Transport Protocol defines a standard packet format for delivering audio and video over the internet. It is defined in RFC 1889. It was developed by the Audio Video Transport Working group and was first published in 1996. RTP and RTCP are closely linked – RTP delivers the actual data [...]
0 comments | ContinuedWhat is SIP – Session Initiation Protocol?
SIP, short for Session Initiation Protocol is an IP telephony signaling protocol used to establish, modify and terminate VOIP telephone calls. SIP was developed by the IETF and published as RFC 3261
0 comments | ContinuedWhat is H323?
H323 is a set of standards from the ITU-T, which defines a set of protocols to provide audio and visual communication over a computer network.
0 comments | ContinuedWhat is DID – Direct Inward Dialing?
DID – Direct Inward Dialing (also called DDI in Europe) is a feature offered by telephone companies for use with their customers’ PABX system, whereby the telephone company (telco) allocates a range of numbers associated with one or more phone lines.
0 comments | ContinuedVOIP gateway information – Learn about VOIP gateways
A VOIP gateway (or PSTN Gateway) is a device which converts telephony traffic into IP for transmission over a data network. They are used in 2 ways: 1. To convert incoming PSTN/telephone lines to VOIP/SIP:
0 comments | ContinuedWhat different types of CODECS are there?
A Codec converts an analog signal to a digital one for transmission over a data network. The following Codecs are in use today
0 comments | ContinuedWhat is a PBX Phone System?
PBX stands for Private Branch Exchange, which is a private telephone network used within a company. The users of the PBX phone system share a number of outside lines for making external phone calls.
0 comments | ContinuedWhat is Unified Communications?
Unified Communications is defined as the process in which all means of communication, communication devices and media are integrated, allowing users to be in touch with anyone, wherever they are, and in real time.
0 comments | ContinuedWhat is SIP forking?
SIP forking refers to the process of “forking” a single SIP call to multiple SIP endpoints. This is a very powerful feature of SIP. A single call can ring many endpoints at the same time.
0 comments | Continued