How do name and phone number of `dialer map' interfere?

We use the telephone number first actually.  If the
caller id matches the telephone number to call, then you don't need the
'name' parameter with a phone number.

I realized that the above is ambiguous, so let's do this.  You have:

  dialer map ip x.x.x.x name <param1> <phone-num>

<param1> is used for incoming authentication.  It can be either the hostname,
for PAP and CHAP, or it can be a number as returned by caller id.  If this
is not there, and it is an imcoming call, and there is caller id, we will
compare against <phone-num> to see if that matches.

Not sure I've been clear here.