UC Firmware = 5.8.2.4732
On the VVX 400 I have created a Blind transfer that shows the lines by default instead of the dial pad to dial a number.
<softkey
softkey.1.label="BlindXfer"
softkey.1.action="$FTransfer$$FSoftKey3$$FSoftKey1$"
softkey.1.enable="1"
softkey.1.precede="1"
softkey.1.use.idle="0"
softkey.1.use.active="1"
softkey.1.use.alerting="0"
softkey.1.use.dialtone="0"
softkey.1.use.proceeding="0"
softkey.1.use.setup="0"
softkey.1.use.hold="0">
</softkey>
$FSoftKey3$ = Selects the blind option
$FSoftKey1$" = Selects the Lines options
On the VVX 600 the "lines" softkey does not exist. You have to press this button on the display in order to display the lines.