Cisco Headend System Release 2.7 Technical References
Field Notice:
Setting Values for UDP Ports and
SMDGs When Building Multicast
Sessions
Setting Values for UDP Ports and
SMDGs When Building Multicast
Sessions
Background
We have found that when system operators are building GQAM Multicast
sessions and statistical multiplexed dejitter groups (SMDGs), and they use a UDP
port value, the system will experience intermittent macroblocking, tiling and
freezing video, and loss of audio on Music Choice channels. This issue occurs if
the GQAM does not get provisioned with the SMDG, after the SMDG is built on
the DNCS GUI. CR 119669 was written against this issue.
Important: This Field Notice applies to sites running all current system releases
(SRs) except SR 5.0 and later and SR 4.2 SP4.
Note: This issue only applies to GQAMs.
sessions and statistical multiplexed dejitter groups (SMDGs), and they use a UDP
port value, the system will experience intermittent macroblocking, tiling and
freezing video, and loss of audio on Music Choice channels. This issue occurs if
the GQAM does not get provisioned with the SMDG, after the SMDG is built on
the DNCS GUI. CR 119669 was written against this issue.
Important: This Field Notice applies to sites running all current system releases
(SRs) except SR 5.0 and later and SR 4.2 SP4.
Note: This issue only applies to GQAMs.
Recommendation
When building GQAM Multicast Sessions and SMDGs on the GUI, leave the UDP
port value blank or set it to zero (0).
Important: If the issue is occurring at your site, or if you are concerned because
you have used a UDP port value for all of your existing SMDGs or GQAM
Multicast sessions, contact Cisco Services at 770 236-2200 or 866 787-3866 to
update the UDP ports and set them to 0 in the DNCS database.
port value blank or set it to zero (0).
Important: If the issue is occurring at your site, or if you are concerned because
you have used a UDP port value for all of your existing SMDGs or GQAM
Multicast sessions, contact Cisco Services at 770 236-2200 or 866 787-3866 to
update the UDP ports and set them to 0 in the DNCS database.