Meridian Digital Group Listening (Glisten) - Nortel Meridian M3900 Reference Manual

20 M3900 series general description
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Interactions and restrictions
During the download process, the M3900 sets are in an inoperable
state. The sets display a message indicating that a download is in
progress. If a download fails, the display indicates that maintenance is
required.
In cases where there is an IPE equipped with an EXPEC and both
M3900 and M2000 series sets coexist, the M2000 sets continue to
operate during the flash download process.

Meridian Digital Group Listening (GLISTEN)

Use the GLISTEN feature to activate the loudspeaker on the set when
the handset is in use. A group of people can listen to the audio, but only
the handset transmits audio to the far end. Group listening differs from
handsfree in that the set enables the loudspeaker, but not the
handsfree microphone. The handset is off-hook and its audio paths are
on.
The GLISTEN feature is only available when enabled, and when
assigned to the set through SERVORD. When this feature is not
available, it does not show up in the options menu lists. In addition,
because handsfree and group listening cannot be in activation at the
same time, the group listening enable feature is not in the options list if
there is an active call with handsfree enabled.
In order to use the GLISTEN feature, the user must first enable the
feature by using the Options mode. When the feature is enabled, the
handsfree key can turn the speaker on or off. To turn off the speaker,
the user must press the Handsfree key a second time. The speaker only
turns on if the handset is off-hook. The speaker automatically turns off
when the handset is placed on-hook.
555-4001-136 Standard 05.06 May 2002
initiate flash download for all Meridian digital telephones configured
on an IPE peripheral equipped with an extended peripheral
equipment controller (EXPEC), NT7D07BA or later vintage
keep track of download progress, and manage the correlation of
firmware files for the different sets
log download failures and provide a record of completed or failed
downloads
abort a download
Note: M3900 sets require an intelligent peripheral equipment
(IPE) equipped with an EXPEC, NT7D07BA or later version.