Definitions for "Service Profile Identifier"
Keywords:  spid, isdn, rcn, telco, assign
An alphanumeric identifier that identifies the service capabilities of an ISDN device. The telephone company assigns this number.
A number that the telephone company switching equipment uses to keep track of configuration information for each terminal adapter connected to an ISDN telephone line. The telephone company should give you your SPIDs at the time they assign you your ISDN directory numbers.
The generic SPID format comprises 14 digits: the first 10 digits are the area code and telephone number of the ISDN line; the second two digits identify the switch to which the terminal device is connected; and the last two numbers identify the specific terminal device being connected on that ISDN line.