D 14049.01
07.2007 95
TANDBERG VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
Text goes here
Introduction Getting
Started
System
Overview
System
Configuration
H.323 & SIP
Configuration
Registration
Control
Zones and
Neighbors
Call
Processing
Firewall
Traversal
Bandwidth
Control Maintenance Appe ndices
TANDBERG
ADMINISTRATOR GUIDE
TANDBERG VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
Call
Processing

About the Call Control API

The VCS provides a third part y call control
API. Currently this API suppor ts the following
feature:
disconnecting a call.
Each call that passes throug h the VCS is assigned a call ID number a nd a call serial number, both of which c an be referenced when discon necting a
call via the CLI.

Call ID Number

The VCS assigns each call curren tly in progress a differen t call ID number. The ID numbers star t at 1 and go up to the maximum numb er of calls
allowed on that system.
Each time a call is made, the VCS will assi gn that call the lowest availabl e call ID number. For example, if there is alr eady a call in progress with an I D
of 1, the next call will be assigned an I D of 2. If call 1 is then disconnected, t he third call to be made will be assig ned an ID of 1.
The call ID number is not therefore a u nique identifier: while no t wo calls in progress at the sam e time will have the same call ID numb er, the same
number will be assigned to more th an one call over time.

Call Serial Number

The VCS assigns a unique serial num ber to every call passing thro ugh it. No two calls on a VCS will ever h ave the same serial number. However, a
single call passing through a nu mber of VCSs will be identifie d by a different serial numbe r on each system.
Disconnecting calls

Overview Identifying a Particular Call

Obtaining the Call ID/Serial Number

To control calls using the CLI, you must
reference the call using eithe r its call ID or
serial number. These can be obtain ed using
the command:
xStatus Calls
This will return details of each call c urrently
in progress in order of their call I D number.
The second line of each entr y will list the call
serial number.

Call ID number

Call serial number

The VCS web UI does not use the call
ID number. Calls are identified usin g
their call serial number only.