Thursday, 3 November 2016

QoS Enhacements in CUCM 11.X

  • These were added in CUCM v11
  • The main enhancements are:
    • Separating UDP Port Ranges for Audio and Video
    • Separating DSCP Markings for Audio and Video streams in Video Calls
      • You can have separate markings for audio in Telepresence video call than Fixed video call
  • Navigate to Device > Device Settings > SIP Profile.
  • Current endpoints which support this enhancement (03/11/2016)
Video Endpoint
DSCP for Audio Portion of Video Calls
DSCP for Audio Portion of TelePresence Calls
8800 Series
Yes
N/A
8900 Series
No
N/A
9900 Series
No
N/A
Jabber
Yes (Jabber for Windows uses Group Policy Objects to mark traffic on the PC else DSCP will be set to '0'. All other Jabber clients are able to mark DSCP natively)
No
DX Series
Yes
Yes
TX Series
N/A
Yes
IX Series
N/A
No
CE 8.x Software Series (SX Series, MX Series G2, MX700, MX800)
N/A
Yes
TC 7.1.4 Software Series (C Series, Profile Series, EX Series, MX Series G1)
N/A
Yes
EX Series (TC Software)
N/A
Yes

  • Restrictions
    • These features are supported on SIP endpoints Only
    • For Jabber Softphones, only separate UDP ports can be used. This is because Windows OS doesn’t allow DSCP markings natively (can be fixed by registry tweak or using GPO)
    • Prior to this feature, Jabber Client will divide the RTP Port Range received in TFTP File into two splits. Lower half will be used for audio and upper half will be used for video

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