This section gives information about the tags that
can be used in call transfer applications.
- CONSULT
-
A SIP 'CONSULT' tag. This is used to make
the outbound call of an attended call transfer.
- Size
- The maximum length of the tag is 256 characters.
- Valid attributes
- None.
- Valid usage
-
- The 'CONSULT' tag must be set to 0 in SV541 prior
to issuing the TransferCall state table action to request that an
outbound call be established. The VOIP_Call_Transfer custom server
must be installed and running when using a 'CONSULT' tag
- Example
-
CONSULT=0
- TRANSFER
-
A SIP 'TRANSFER' tag. This invokes the REFER/REPLACES
call transfer action.
- Size
- The maximum length of the tag is 256 characters. The tag value
should be set to '0'.
- Valid attributes
- None.
- Valid usage
-
- To invoke a SIP call transfer using a TransferCall action, this
must be set in SV541. This tag should be used either after the VOIP_Call_Transfer
custom server has initiated an outbound call using CONSULT (and the
consult phase is complete), or with any existing call as long as its
call reference (SV237) is also assigned to SV541 in the CAL_REF tag.
- Examples
-
TRANSFER=0
or TRANSFER=0
CALL_REF=1234
- CALL_REF
-
A SIP 'CALL_REF' tag. This is used with the
TRANSFER tag to identify another existing call for which
a SIP REFER/REPLACES transfer action is required. The VOIP_Call_Transfer
custom server is not needed to establish the outbound call if the
CALL_REF tag is used.
For example, '1234'.
- Size
- The maximum length of the tag is 12 digit characters.
- Valid attributes
- None.
- Valid usage
-
- To invoke a SIP call transfer on a TransferCall action in SV541.
This tag should be assigned to the call reference value (SV237) of
the call to which the transfer is required. The TRANSFER tag must
also be assigned (see TRANSFER for
more information).
- Example
- 234568
- XFER_TIMER
- A SIP 'XFER_TIMER' tag can be used to set the
timeout for a blind transfer.
- Size
- The maximum length of the tag is 256 characters
- Valid attributes
- None
- Valid usage
- Set in SV541 prior to invoking a blind transfer.
- XFER_TIMER can be set to any value in the range 0 to 35. If it
is set to a value greater than 35, a value of 35 will be used.
- Set XFER_TIMER to 0 for true blind transfer to occur.
- Example
- XFER_TIMER=0