A really cool feature of the Intelafone system is that you can transfer a call from one device associated with your account to another.
Example: You receive a call on your wireless handsets powered by an Intelafone ATA and you would like to finish taking that call in your home office on your Intelafone GXP1400 desk phone.
Dial * * * * during the call.
Dial * * (press star twice) wait 1 second, dial ** again (once) and your call will be put on hold while it rings through on all the devices associated with your account. You then can pickup that call and continue your conversation.