Lucent Technologies 555-233-119 Some Parties Cannot Be Heard by Others (Audio Subsetting), Calls Terminate with No Video

DEFINITY ECS Release 8.2 Maintenance for R8.2csi 555-233-119 Issue 1
April 2000
Maintenance for csi systems
1-93Multimedia Call Handling
1
Solution
1. Use the Status Conference x form and chec k the Audio Mode field for the
current operating mod e of the conference.
2. Another indication of the aud io modes is in the “Inc oming Mode
Commands from Endpoint and Outg oing Commands from MMI” on page
3 of the Status Conference x Endpoint y form. Chec k the Audio fields
under the Mode Commands/Com munication Modes section of the fo rm.
Some Parties Cannot Be Heard by Others (Audio
Subsetting)
Description
Problems where varying subsets of the c onference hear different things may
have problems with the various summing resources/groups that are in use.
Traditionally theses faults are caused by the SPE not cleaning up the connections
properly. Isolation and diagn osis should focus on the VC resources in use by that
conference.
Solution
1. Use the status conference command to list the VC resources in use b y
this conference. Try a hot replacement of any VC board s in use, which
refreshes the VC translations and move all of the audio c onnections to
different VC ports.
2. If the problem still exists, try d ropping the c onference and then bring ing
the conference bac k up again. Not only does this refresh VC translations,
but uses different timeslots as well.
3. If the problem still exists, susp ect a hardware problem. If p ractical, wait for
the DEFINITY MMCH to be idle (no active conferences), and then check
the circuit packs for active (yellow) LEDs. If any of these are unexpected ,
such as on a VC board, try rep lacing the board a nd then bringing the
conference up aga in.
Calls Terminate with No Video
Description
Generally, loss of video can be d ivided into 2 types. The first oc curs when the
DEFINITY MMCH switches to the endpoint, but nobod y sees them. The receivers
see either “black” video or a frozen image of the p revious speaker depe nding on
the codec of the manufac turer. The type occurs when the DEFINITY MMCH does
not switch to an endpoint.