Voice peering, also called VoIP peering, refers to the forwarding of calls from one

ITSP An Internet telephony service provider (ITSP) offers digital telecommunications services based on Voice over Internet Protocol (VoIP) that are provisioned via the Internet. ITSPs provide services to end-users directly or as whole-sale suppliers to ...

to another ITSP directly using

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 ...

technology. The call is not forwarded over the

PSTN The public switched telephone network (PSTN) is the aggregate of the world's telephone networks that are operated by national, regional, or local telephony operators. It provides infrastructure and services for public telephony. The PSTN consists ...

and this leads to costs savings (no call charges) and better quality because there is no

transcoding Transcoding is the direct digital-to-digital conversion of one encoding to another, such as for video data files, audio files (e.g., MP3, WAV), or character encoding (e.g., UTF-8, ISO/IEC 8859). This is usually done in cases where a target ...

between the VoIP cloud and the PSTN, and then back from the PSTN to the next VoIP cloud. VoIP peering may occur on Layer 2 basis, i.e. a private network is provided, and carriers connected with it manage peering between one another, or on a layer 5 basis, i.e. peering occurs on open networks, with routing and signaling managed by a central provider. Voice peering can occur on a bilateral or multilateral basis. Bilateral peering does not scale when many service providers seek to interconnect and peer with one another. Standards on Multilateral, layer 5 peering are under development by 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 ...

working group on VoIP Peering, SPEERMINT.

External links

White Paper on SIP Peering
{{DEFAULTSORT:Voice Peering Voice over IP

See also

External links