Conventions for the use of the Session Description Protocol (SDP) for ATM Bearer Connections

Kumar, Rajesh; Mostafa, Mahmoud

doi:10.17487/rfc3108

Cited by 6 publications

(10 citation statements)

References 15 publications

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“…See [18] and [34] for a list of codecs with static payload types. The <packetLength> is a decimal integer representation of the packet length in octets.…”

Section: Atm Adaptation Layer (Aal)mentioning

confidence: 99%

“…The gateway conveys intersection results through the media information line in SDP [18]. Whether these lists imply a real priority or not, a profile is, as a general rule, preferred to profiles that follow it in a list.…”

Section: Codec/profile Negotiation In Atm Networkmentioning

confidence: 99%

“…As part of profile negotiation, applications might choose to coordinate those bindings that are meaningful. When this is done, the vsel, dsel and fsel LCOs described in this document, and the vsel, dsel and fsel media attribute lines [18] are used to effect this coordination. Using these constructs, entities such as call agents and media gateways can indicate preferred bindings for the first, most preferred profile in a profile list.…”

Section: Codec/profile Negotiation In Atm Networkmentioning

confidence: 99%

“…Packages such as the MGCP CAS packages [38] are modular sets of parameters such as connection options, signal, event and statistics definitions that can be used to extend it into specific contexts. A related, IP-based mechanism for the description of ATM connections [18] has been generated by the IETF MMUSIC group. Due to the IP-centric nature of all aspects of the MGCP device control protocol, and for consistency with other MGCP package definitions, it is desirable to publish the MGCP ATM package in an IETF document.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Asynchronous Transfer Mode (ATM) Package for the Media Gateway Control Protocol (MGCP)

Kumar¹

2003

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“…See [18] and [34] for a list of codecs with static payload types. The <packetLength> is a decimal integer representation of the packet length in octets.…”

Section: Atm Adaptation Layer (Aal)mentioning

confidence: 99%

Section: Codec/profile Negotiation In Atm Networkmentioning

confidence: 99%

Section: Codec/profile Negotiation In Atm Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Asynchronous Transfer Mode (ATM) Package for the Media Gateway Control Protocol (MGCP)

Kumar¹

2003

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“…Previous work includes SDP conventions for describing ATM bearer connections [RFC3108] and the Message Session Relay Protocol [RFC4975].…”

mentioning

confidence: 99%

Session Description Protocol (SDP) Extension for Setting Audio and Video Media Streams over Circuit-Switched Bearers in the Public Switched Telephone Network (PSTN)

Veikkolainen¹

2014

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Issues in supporting multimedia services in SIP networks with mixed endpoint types

et al. 2004

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The evolution from traditional circuit-based networks to packet-based networks is a salient feature of today's telecommunications industry. As IntroductionPacket networks based on Session Initiation Protocol (SIP) and Internet Protocol (IP) are showing great promise for the telecommunications industry. Industry analysts believe this new technology will enable a large number of new revenue-generating services, reduce the cost of operating a network, and revolutionize the nature of telecommunications. As SIP networks mature to support mixed endpoint types and replace existing portions of the public switched telephone network (PSTN), interesting issues arise relating to interoperability among the various endpoints.This paper begins with a discussion of the various endpoint types that may coexist in a SIP-based service network. It then explores some of the issues that surface when interoperating between mixed endpoint types. The issues discussed include interworking between ISDN User Part (ISUP) and SIP, call progress handling and early media, media transport, and signaling transport. Endpoint TypesSeveral different types of endpoints (e.g., native SIP endpoints, gateways to PSTN endpoints, transit nodes, mobile switching centers [MSCs], and application servers) may coexist in a SIP-based network. Native SIP endpoints use SIP to set up call sessions; gateways to PSTN endpoints provide access to the Bell Labs Technical Journal 9(3), 183-197 (2004) Native SIP EndpointsA native SIP endpoint is an endpoint that uses SIP signaling to establish a call session. SIP signaling is used to create, modify, and terminate multimedia sessions. Networks that support native SIP endpoints must make allowance for a number of characteristics common to such endpoints. For example, native SIP endpoints use a uniform resource identifier (URI) and a dynamic addressing scheme that requires domain name server (DNS) resolution. They also support a wide variety of codec types. Finally, they are not homogeneous; they may have a variety of capabilities and user interfaces that can be used to establish sessions. For example, when a callee is being alerted, a native SIP endpoint with a graphical user interface (GUI) may display a message or a picture of a phone ringing, while native SIP endpoints lacking such an interface may simply provide a local ringing tone, as most existing SIP endpoints do. Because of such differences, the progress of a call is communicated by having a terminating SIP endpoint generate a SIP signaling message and send it out-of-band to the originating SIP endpoint. This allows the originating endpoint to provide distinct behavior based on its capabilities; for example, an endpoint with a GUI may show a picture of a phone ringing instead of providing an audible ringing tone. SIP endpoints typically provide call progress indication using SIP provisional messages out-of-band.A preconditions feature can be used to minimize ghost rings to the originator of a session. (The term "ghost rings" refers to an immediate alert that ...

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Conventions for the use of the Session Description Protocol (SDP) for ATM Bearer Connections

Cited by 6 publications

References 15 publications

Asynchronous Transfer Mode (ATM) Package for the Media Gateway Control Protocol (MGCP)

Asynchronous Transfer Mode (ATM) Package for the Media Gateway Control Protocol (MGCP)

Session Description Protocol (SDP) Extension for Setting Audio and Video Media Streams over Circuit-Switched Bearers in the Public Switched Telephone Network (PSTN)

Issues in supporting multimedia services in SIP networks with mixed endpoint types

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