Cisco Cisco TelePresence Video Communication Server Expressway 관리 매뉴얼
Call Tag
Call Tags are used to track calls passing through a number of VCSs. When the VCS receives a call, it checks to see if
there is a Call Tag already assigned to it. If so, the VCS will use the existing Call Tag; if not, it will assign a new Call
Tag to the call. This Call Tag is then included in the call’s details when the call is forwarded on. A single call passing
between two or more VCSs will be assigned a different Call Serial Number each time it arrives at a VCS (including
one it has already passed through) but can be identified as the same call by use of the Call Tag. This is particularly
useful if you are using a
there is a Call Tag already assigned to it. If so, the VCS will use the existing Call Tag; if not, it will assign a new Call
Tag to the call. This Call Tag is then included in the call’s details when the call is forwarded on. A single call passing
between two or more VCSs will be assigned a different Call Serial Number each time it arrives at a VCS (including
one it has already passed through) but can be identified as the same call by use of the Call Tag. This is particularly
useful if you are using a
feature,
and you can also search the Event Log for all events relating to a single call tag. Loops occur when a query is sent to
a neighbor zone and passes through one or more systems before being routed back to the original VCS. In this
situation the outgoing and incoming query will have different Call Serial Numbers and may even be for different
destination aliases (depending on whether any transforms were applied). However, the call will still have the same
Call Tag.
a neighbor zone and passes through one or more systems before being routed back to the original VCS. In this
situation the outgoing and incoming query will have different Call Serial Numbers and may even be for different
destination aliases (depending on whether any transforms were applied). However, the call will still have the same
Call Tag.
Note:
If a call passes through a system that is not a VCS or TelePresence Conductor then the Call Tag information will
be lost.
Identifying Calls in the CLI
To control a call using the CLI, you must reference the call using either its Call ID or Call Serial Number. These can be
obtained using the command:
obtained using the command:
xStatus Calls
This returns details of each call currently in progress in order of their Call ID. The second line of each entry lists the
Call Serial Number, and the third lists the Call Tag.
Call Serial Number, and the third lists the Call Tag.
Disconnecting Calls
Disconnecting a call using the web interface
To disconnect one or more existing calls using the web interface:
1.
Go to the Calls page (Status > Calls).
2.
If you want to confirm the details of the call, including the Call Serial Number and Call Tag, click View. Click
the back button on your browser to return to the Calls page.
the back button on your browser to return to the Calls page.
3.
Select the box next to the calls you want to terminate and click Disconnect.
Note that if your VCS is part of a cluster you have to be logged into the peer through which the call is associated to be
able to disconnect the call.
able to disconnect the call.
Disconnecting a call using the CLI
To disconnect an existing call using the CLI, you must first obtain either the call ID number or the call serial number
(see
(see
). Then use either one of the following commands as appropriate:
■
xCommand DisconnectCall Call: <ID number>
■
xCommand DisconnectCall CallSerialNumber: <serial number>
While it is quicker to use the call ID number to reference the call to be disconnected, there is a risk that in the
meantime the call has already been disconnected and the call ID assigned to a new call. For this reason, the VCS
also allows you to reference the call using the longer but unique call serial number.
meantime the call has already been disconnected and the call ID assigned to a new call. For this reason, the VCS
also allows you to reference the call using the longer but unique call serial number.
Note that when disconnecting a call, only the call with that Call Serial Number is disconnected. Other calls with the
same Call Tag but a different Call Serial Number may not be affected.
same Call Tag but a different Call Serial Number may not be affected.
Limitations when disconnecting SIP calls
Call disconnection works differently for H.323 and SIP calls due to differences in the way the protocols work.
For H.323 calls, and interworked calls, the
Disconnect
command actually disconnects the call.
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Cisco TelePresence Video Communication Server Administrator Guide
Dial Plan and Call Processing