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Using the Cisco TelePresence ISDN Gateway for voice-only calls
Cisco TelePresence ISDN Gateway 2.1 Online help (Printable format) 15 of 135
Displaying ISDN port utilization
For each ISDN port, you can view details of any port activity for each ISDN channel. To display ISDN port
utilization details, go to ISDN > ISDN ports.
A message shows the status of ISDN layers 1 (physical) and 2 (D-channel). The same information is
shown in the ISDN Status page.
Note that if the ISDN Gateway is in leased line mode, there will be no status for layer 2.
The following information is displayed for each channel of every ISDN port:
Field
Field description
#
The ISDN channel number.
Activity
Whether or not this channel on this port is currently active. Activity is one of:
inactive: not in use.
active (data): in use. A voice and video call is taking place and is using this
channel.
active (voice): in use. An audio-only call is taking place and is using this
channel.
Direction
If the channel is active, the direction of the call is displayed. Either:
inbound: for calls to the ISDN endpoint.
outbound: for calls from the ISDN endpoint.
Calling party
The identity of the endpoint that initiated the call (depending on what that endpoint
has provided):
for IP-ISDN calls (that is, outbound calls), this is the name of the H.323
device, the telephone number, or "Cisco TelePresence ISDN Gateway".
for ISDN-IP calls (that is, inbound calls), this is the telephone number of the
endpoint that made the call.
Called party
The number that was dialed by the calling party. Note that if the ISDN Gateway is in
leased line mode, there will be no called part number available.
For each port there is an Activate D-channel now button that is only active if layer 1 is up and layer 2 (D-
channel) is not. If neither or both are up for a port, the button is disabled for that port. Click the button to
bring up the D-channel.
Note: Typically, you need never do this because the ISDN Gateway automatically tries to bring up the D-
channel periodically. Also clicking the button is not guaranteed to work.