Call Transfer Capacity Reference Manual (SIP Version)
Mediatrix 1104
231
Call Transfer Capacity
The following parameters allow you to define how the Mediatrix 1104 handles call transfers.
Call Transfer Version
You can select the version of the transfer draft that the Mediatrix 1104 uses. The provisioned version is used
for initiating transfers and receiving them. Transfer versions other than those provisioned do not work.
This feature is currently located under the mediatrixExperimental branch of the MIB structure. See “MIB
Structure” on page 127 for more details.
X To set the version of transfer supported:
1. In the sipInteropMIB, set the sipInteropTransferVersion variable with the proper version.
•transfer02
• transfer05UsingRefer02
Replaces Configuration Setting
You can configure how to use the Replaces header mechanism used in a transfer. When supported by the
target of the transfer, the Replaces header mechanism ensures a more seamless transfer by permitting the
initiating party to effectively replace a current call by another instead of disconnecting the call to be replaced
and creating a second call. This allows you to control how the Mediatrix 1104 interoperates with other vendor’s
products and older Mediatrix units.
This feature is currently located under the mediatrixExperimental branch of the MIB structure. See “MIB
Structure” on page 127 for more details.
X To set Replaces configuration:
1. In the sipInteropMIB, set the Replaces configuration in the sipInteropReplacesConfig variable.
You have the following choices:
Standards Supported • draft-ietf-sip-cc-transfer-05.txt
• draft-ietf-sip-cc-transfer-02.txt (expired)
• draft-ietf-sip-refer-02.txt
Table 136: Call Transfer Versions Supported
Version Description
transfer02 The Mediatrix 1104 executes transfers by using the methods described in the
now expired draft-ietf-sip-cc-transfer-02.txt. Its use is deprecated and you should
use this setting for backward compatibility issues only.
transfer05UsingRefer02 The Mediatrix 1104 executes transfers by using the methods described in the
more recent draft-ietf-sip-cc-transfer-05.txt. This draft version contains several
enhancements over the previous ones. Among others, it is possible to use the
Replaces header to provide a more seamless attended transfer to the user. This
method also uses draft-ietf-sip-refer-02.txt. Use this setting if you do not need to
interop with transfer02-enabled parties. See “Replaces Configuration Setting” on
page 231 for more details.
Table 137: Replaces Configuration
Configuration Description
doNotUseReplaces The Replaces header is not used.
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