These include RTCP Extended Report ( RFC 3611 ), SIP RTCP Summary Reports, H. 460. 9 Annex B ( for H. 323 ), H. 248. 30 and MGCP extensions.

The RFC 3611 VoIP Metrics block is generated by an IP phone or gateway during a live call and contains information on packet loss rate, packet discard rate ( because of jitter ), packet loss / discard burst metrics ( burst length / density, gap length / density ), network delay, end system delay, signal / noise / echo level, Mean Opinion Scores ( MOS ) and R factors and configuration information related to the jitter buffer.

RFC 3611 VoIP metrics reports are intended to support real time feedback related to QoS problems, the exchange of information between the endpoints for improved call quality calculation and a variety of other applications.

A standards-based extension of RTCP is the Extended Report packet type introduced by RFC 3611.

This URI will be used for looking-up and fetching the NAPTR record obtaining the called party wishes about how the call should be forwarded or terminated ( either on IP or on PSTN terminations ) – the so-called access information – which the registrant ( the called party ) has specified by writing his / her choice at the NAPTR record (" Naming Authority Pointer Resource Records " as defined in RFC 3403 ), such as e-mail addresses, a fax number, a personal website, a VoIP number, mobile telephone numbers, voice mail systems, IP-telephony addresses, web pages, GPS coordinates, call diversions or instant messaging.

In the example above, the response is an address that can be reached in the Internet using the VoIP protocol SIP per RFC 3261.

* Network-Based Call Signaling Protocol Specification ( NCS ) which is an MGCP extension for analog residential Media Gateways-the NCS specification, which is derived from the IETF MGCP RFC 2705, details VoIP signalling.

As part of the RTP audio video profile, RFC 3389 defines a standard for distributing comfort noise information in VoIP systems.

The Name / Finger protocol, written by David Zimmerman, is based on Request for comments document RFC 742 ( December 1977 ) as an interface to the < tt > name </ tt > and < tt > finger </ tt > programs that provide status reports on a particular computer system or a particular person at network sites.

In the Provisioning Model, see RFC 3084 COPS Usage for Policy Provisioning ( COPS-PR ), the PEP reports its decision-making capabilities to the PDP.

RFC 5321, as well as RFC 2821, states that non-delivery reports ( bounces ) must be sent to the originator as indicated in the reverse path after an MTA accepted the responsibility for delivery.

Collectively, these stages are known as the Standards Track, and are defined in RFC 2026 and RFC 6410.

ICMP messages are typically used for diagnostic or control purposes or generated in response to errors in IP operations ( as specified in RFC 1122 ).

There are statistics available that show who the top contributors have been, by RFC publication ..

Also, some address ranges are considered special, such as link-local addresses for use on the local link only, Unique Local addresses ( ULA ) as described in RFC 4193, and solicited-node multicast addresses used in the Neighbor Discovery Protocol.

The RFC and the IANA's list of transfer encodings define the values shown below, which are not case sensitive.

Many signature types are possible, like application / pgp-signature ( RFC 3156 ) and application / pkcs7-signature ( S / MIME ).

Cardiff RFC Ltd, the company that runs Cardiff Blues and Cardiff RFC, still has a 15-year lease on the Arms Park, but talks are underway to release the rugby club from the terms of the lease, to enable the Millennium Stadium to be redeveloped with a new North Stand and adjoining convention centre.

These pitches are often used by Devonport High School for Boys and the Old Boys RFC.

The main QoS-related IETF Request For Comments ( RFC ) s are Definition of the Differentiated Services Field ( DS Field ) in the IPv4 and IPv6 Headers ( RFC 2474 ), and Resource ReSerVation Protocol ( RSVP ) ( RFC 2205 ); both these are discussed above.

Therefore, some RFCs supersede others ; the superseded RFCs are said to be deprecated, obsolete, or obsoleted by the superseding RFC.

In other words, IRTF and independent RFCs are supposed to contain relevant info or experiments for the Internet at large not in conflict with IETF work, compare RFC 4846, RFC 5742, and RFC 5744.

Some old FYIs are still interesting, e. g., the Internet User's Glossary RFC 1983 ( FYI 18 ), and The Tao of IETF RFC 4677 ( FYI 17 ).

Some obsolete RFCs are not classified as historic, because the Internet standards process generally does not allow normative references from a standards track RFC to another RFC with lower status.

* RFC 2157 Mapping between X. 400 and RFC-822 / MIME Message Bodies

The opening ceremony took place on 5 October 1912, with a match between Newport RFC and Cardiff RFC.

Later, the National Stadium was also home to the WRU Challenge Cup from 1972 until the match held at the Stadium on 26 April 1997, at a much reduced capacity, between Cardiff RFC and Swansea RFC.

One may distinguish initial submission as first passing through an MSA – port 587 is used for communication between an MUA and an MSA while port 25 is used for communication between MTAs, or from an MSA to an MTA ; this distinction is first made in RFC 2476.

Although written by Steve Crocker, the RFC emerged from an early working group discussion between Steve Crocker, Steve Carr and Jeff Rulifson.

* The RTP profile for Audio and video conferences with minimal control ( RFC 3551 ) defines a set of static payload type assignments, and a mechanism for mapping between a payload format, and a payload type identifier ( in header ) using Session Description Protocol ( SDP ).

This is in contrast to Exterior Gateway Protocols, primarily Border Gateway Protocol ( BGP ), which is used for routing between autonomous systems ( RFC 1930 ).

Inspired by RFC 2549, on 9 September 2009, the marketing team of The Unlimited, a regional company in South Africa, decided to host a tongue-in-cheek " Pigeon Race " between their pet pigeon " Winston " and local telecom company Telkom SA.

Instead, the recommended way to take advantage of 8-bit-clean links between machines is to use the ESMTP ( RFC 1869 ) 8BITMIME extension.

As stated in the RFC, " the differences between this protocol and SSL 3. 0 are not dramatic, but they are significant enough that TLS 1. 0 and SSL 3. 0 do not interoperate.

* IKE redirect: redirection of incoming IKE requests, allowing for simple load-balancing between multiple IKE endpoints ( RFC 5685 ).

* High availability extensions: improving IKE / IPsec-level protocol synchronization between a cluster of IPsec endpoints and a peer, to reduce the probability of dropped connections after a failover event ( RFC 6311 ).

The Message Session Relay Protocol ( RFC 4975, RFC 4976 ) is a text-based protocol for exchanging arbitrarily-sized content between users, at any time.

Every major rugby union touring team to visit Wales has played at Rodney Parade, and all of them were beaten at least once in the twentieth century by a side who, in 1951, played in the match at Cardiff RFC that attracted what was, a world-record crowd of 48, 500 for a rugby union match between two clubs.

The site was founded in the autumn of 1914 when farmland between Westbarrow Hall and the Great Eastern railway line at Warners Bridge 2½ miles north of Southend Pier was acquired for RFC training purposes.

The second is to run the path MTU discovery algorithm, described in RFC 1191, to determine the path MTU between two IP hosts, so that IP fragmentation can be avoided.

* No. 82 Squadron RFC between 30 March 1917 and 17 Novemeber 1917 using the AW FK 8 before moving to St Omer.

* No. 97 Squadron RFC between 1 December 1917 and 21 January 1918 with no aircraft before moving to Stonehenge.

RFC 3986 specifies that the query component of a URI is the part between the and the end of the URI or the character.