TDM-to-packet conversion is the process of converting a digital signal in
TDM format (typically a 64 Kbit/second signal encoded with
mu-law or
A-law
An A-law algorithm is a standard companding algorithm, used in European 8-bit PCM digital communications systems to optimize, i.e. modify, the dynamic range of an analog signal for digitizing. It is one of the two companding algorithms in the ...
compression) into packets (typically
RTP packets) for carrying over a packet network such as the
Internet
The Internet (or internet) is the Global network, global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a internetworking, network of networks ...
.
The conversion process may include recoding with a different
codec
A codec is a computer hardware or software component that encodes or decodes a data stream or signal. ''Codec'' is a portmanteau of coder/decoder.
In electronic communications, an endec is a device that acts as both an encoder and a decoder o ...
, silence suppression, comfort noise generation and other tricks that can decrease the bandwidth requirement or improve the perceived voice quality of the result.
Note that this is a conversion of the signal, not a tunnelling, unlike
TDM over IP, which aims at transporting a TDM signal unchanged across an IP network.
See also
*
Voice over IP
Voice over Internet Protocol (VoIP), also known as IP telephony, is a set of technologies used primarily for voice communication sessions over Internet Protocol (IP) networks, such as the Internet. VoIP enables voice calls to be transmitted as ...
References
Multiplexing