CALLID() (STRING)

 Function
  Access caller ID information returned from caller ID compatible modems.

 Syntax
  CALLID()   No arguments are required

 Return Type & Value
  STRING
  Returns a string with caller ID information captured from
  a caller ID compatible modem.

 Remarks
  Some areas of the country have an optional service available which will
  send, to your modem (other other telephone device), the phone number
  and/or name of the person calling you.  This service is known as 'Caller
  ID'.  Some modems are starting to support it directly by capturing the
  information and sending it to you between the first and second rings.

  It can be very helpful in determining who is calling (or abusing) your
  BBS or for statistical purposes.  This function will return the
  information if your modem supports it.

 Examples
  FAPPEND 1,"CID.LOG",O_WR,S_DW
  FPUTLN 1,LEFT(U_NAME(),30)+CALLID()
  FCLOSE 1