Tech-invite  3GPPspace  IETFspace
SIP ↠  Examples  Grammars  Presence ⇾
SIP  SIP‑URI  SIP Headers  SIP P‑Headers  SDP  Generic URI  ABNF Notation
Session Description  Addressing  generic rules  "a=" SDP Attributes
List   Prev   Next
SDP attributes defined in

RFC 7273 – RTP Clock Source Signalling

RFC 7273 – Section 4.8
a=ts‑refclk   a=mediaclk

 

attribute  =/
timestamp‑refclk /  media‑clksrc
timestamp-refclk =
"ts‑refclk:"  clksrc
Top
clksrc =
ntp /  ptp /  gps /  gal /  glonass /  local /  private /  clksrc‑ext
Up
clksrc-ext =
clksrc‑param‑name  clksrc‑param‑value
Up
clksrc-param-name =
token
Up
clksrc-param-value =
[ "="  byte‑string ]
Up
ntp =
"ntp="  ntp‑server‑addr
Up
ntp-server-addr =
hostport /  "/traceable/"
Up
ptp =
"ptp="  ptp‑version  ":"  ptp‑server
Up
ptp-version =
"IEEE1588‑2002" /  "IEEE1588‑2008" /  "IEEE802.1AS‑2011" /  ptp‑version‑ext
Up
ptp-version-ext =
token
Up
ptp-server =
ptp‑gmid  [ ":"  ptp‑domain ] /  "traceable"
Up
ptp-gmid =
EUI64
Up
ptp-domain =
ptp‑domain‑name /  ptp‑domain‑nmbr
; PTP domain allowed characters: 0x21‑0x7E (IEEE 1588‑2002)
Up
ptp-domain-name =
"domain‑name="  1*16ptp‑domain‑char
Up
ptp-domain-char =
%x21‑7E
; PTP domain allowed number range: 0‑127 (IEEE 1588‑2008)
Up
ptp-domain-nmbr =
"domain‑nmbr="  ptp‑domain‑dgts
Up
ptp-domain-dgts =
ptp‑domain‑n1 /  ptp‑domain‑n2 /  ptp‑domain‑n3
Up
ptp-domain-n1 =
DIGIT     ;  0-9
Up
ptp-domain-n2 =
POS‑DIGIT  DIGIT     ;  10-99
Up
ptp-domain-n3 =
( "10" /  "11" ) DIGIT     ;  100‑119
/  "12" %x30‑37     ;  120‑127
Up
gps =
"gps"
Up
gal =
"gal"
Up
glonass =
"glonass"
Up
local =
"local"
Up
private =
"private"  [ ":traceable" ]
Up
media-clksrc =
"mediaclk:"  [ media‑clkid  SP ]  mediaclock
Top
media-clkid =
"id="  [ "src:" ]  media‑clktag
Up
media-clktag =
base64
Up
mediaclock =
sender /  direct /  ieee1722‑streamid /  mediaclock‑ext
Up
mediaclock-ext =
mediaclock‑param‑name  mediaclock‑param‑value
Up
mediaclock-param-name =
token
Up
mediaclock-param-value =
[ "="  byte‑string ]
Up
sender =
"sender"
Up
direct =
"direct"  [ "="  1*DIGIT ]  [ SP  rate ]
Up
rate =
"rate="  integer  "/"  integer
Up
ieee1722-streamid =
"IEEE1722="  avb‑stream‑id
Up
avb-stream-id =
EUI64
Up
EUI64 =
7( 2HEXDIG  "-" )  2HEXDIG
Up
Up

Top