A signaling gateway is a network component responsible for transferring
signaling messages (i.e. information related to call establishment, billing, location, short messages, address conversion, and other services) between
Common Channel Signaling (CCS) nodes that communicate using different protocols and transports. Transport conversion is often from
SS7 to
IP.
A
SIGTRAN Signaling Gateway is a network component that performs packet level translation of signaling from common channel signaling (based upon SS7) to SIGTRAN signaling (based upon IP). The concept of the SIGTRAN signaling gateway was introduced in the
IETF
The Internet Engineering Task Force (IETF) is a standards organization for the Internet standard, Internet and is responsible for the technical standards that make up the Internet protocol suite (TCP/IP). It has no formal membership roster ...
document: RFC 2719: Architectural Framework for Signaling Transport.
A signaling gateway can be implemented as an embedded component of some other network element, or can be provided as a stand-alone network element. For example: a signaling gateway is often part of a
softswitch in modern
VoIP
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 ...
deployments. The signaling gateway function can also be included within the larger operational domain of a
Signal Transfer Point (STP).
Protocol conversion gateways can also convert from one network operational paradigm to another – for example,
SIP to
ISUP for call control, SIP to
TCAP for address translation, or SIP to
MAP
A map is a symbolic depiction of interrelationships, commonly spatial, between things within a space. A map may be annotated with text and graphics. Like any graphic, a map may be fixed to paper or other durable media, or may be displayed on ...
for location or presence.
See also
*
Media gateway
Voice over IP
Signaling System 7
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