[ns] Temporarily deactivating a node in a wireless network

[Srikanth S.R.]

Hi,
Is there any command to temporarily deactivate a node in a wireless
network? I have searched the tutorial and the web and found that the
commands
$ns rtmodel-at 10.0 down $n(1)
$ns rtmodel-at 20.0 up $n(1)
work for the wired model, but these do not work for a wireless
network. Kindly let me know the equivalent command for that.
Thanks
Srikanth