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Cisco Bug: CSCvt51399 - Two different symbol rates (VoD & Broadcast) not supported for Annex A video QAMs

Last Modified

Jun 05, 2020

Products (1)

  • Cisco Remote PHY Shelves

Known Affected Releases


Description (partial)

macro blocking on either VoD or Broadcast, and CC errors.
If the last configuration that gets applied is VoD, then there might be macro blocking in Broadcast, and vice versa.

configure different symbol rates for VoD and broadcast qam profiles for the same modulation:

cable downstream qam-profile 1
   annex <A|B>
   modulation <X>
   symbol-rate <Y>
   description VoD

cable downstream qam-profile 2
   annex <A|B>
   modulation <X>
   symbol-rate <Z>
   description Broadcast

-> same modulation (X), different symbol rates (Y, Z)
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