[Asterisk-Users] Cordless vs Wireless phones

[Kubat, Philip]

We currently have an Asterisk installation and need to add cordless /
wireless phones.  Requirements are these phone need to be equals to the
"wired" devices, i.e. dedicated buttons for hold, transfer, etc. , e.g. not
an ATA connected analog phone cordless phone.  Was thinking of using 802.11b
SIP phones (etc), but this opens up all the security concerns of 802.11 and
the network.  Do any of these phone support VPNs?   Have to isolate the WLAN
from the LAN.

If not is there a SIP (or any other Asterisk channel) device that is a
"cordless  phone".  Some things like combining an ATA w/a cordless phone?
But as one device with all the "digital" features?

Thanks!
Phil