Mostly just for identification purposes however in some cases you can have the name displayed instead of the caller ID on an incoming call, for instance if you had to answer the phone differently depending on which line the call was coming in on.
This is true, except if you do not have caller ID then you see the trunk name, but if caller ID is enabled then you only see the caller ID, not the trunk name.
I already went around with Toshiba support on this one. You have the option with DID names, but there is not an option with analog trunks for some reason.
You will see the name when you select a trunk for outgoing. I see