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RFC 7273, "RTP Clock Source Signalling", June 2014

Source of RFC: avtcore (rai)

Errata ID: 4450
Status: Verified
Type: Technical

Reported By: Kevin Gross
Date Reported: 2015-08-18
Verifier Name: Ben Campbell
Date Verified: 2016-05-25

Section 4.8 says:

  ; PTP domain allowed characters: 0x21-0x7E (IEEE 1588-2002)
   ptp-domain-name = "domain-name=" 1*16ptp-domain-char
   ptp-domain-char = %x21-7E

   ; PTP domain allowed number range: 0-127 (IEEE 1588-2008)
   ptp-domain-nmbr = "domain-nmbr=" ptp-domain-dgts
   ptp-domain-dgts = ptp-domain-n1 / ptp-domain-n2 / ptp-domain-n3
   ptp-domain-n1   = DIGIT             ; 0-9
   ptp-domain-n2   = POS-DIGIT DIGIT   ; 10-99
   ptp-domain-n3   = ("10"/"11") DIGIT ; 100-119
                   / "12" %x30-37      ; 120-127

It should say:

   ; PTP domain allowed characters: 0x21-0x7E (IEEE 1588-2002)
   ptp-domain-name = 1*16ptp-domain-char
   ptp-domain-char = %x21-7E

   ; PTP domain allowed number range: 0-127 (IEEE 1588-2008)
   ptp-domain-nmbr = ptp-domain-dgts
   ptp-domain-dgts = ptp-domain-n1 / ptp-domain-n2 / ptp-domain-n3
   ptp-domain-n1   = DIGIT             ; 0-9
   ptp-domain-n2   = POS-DIGIT DIGIT   ; 10-99
   ptp-domain-n3   = ("10"/"11") DIGIT ; 100-119
                   / "12" %x30-37      ; 120-127

Notes:

There is an inconsistency between ABNF in section 4.8 and examples in section 5.5. Due to evidence that current implementations are working to what is shown in the examples, this is resolved by updating the ABNF specification.

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