Instruction manual

FEATURES AND SERVICES
Dial Plan
The dialing plan for System 25 is based on the concept that, whenever possible, calls should
be placed to individuals rather than to voice terminals. To implement this concept,
individuals are assigned Personal Dial Codes (PDCs) and are allowed to sign in those PDCs
at other voice terminals. There are two types of PDCs: assigned and floating. An assigned
PDC is associated with each voice terminal. Floating PDCs (FPDCs) may be signed in at any
voice terminal. Calls to FPDCs will ring at the signed-in terminal and may (optionally) ring at
the attendant position when not signed in anywhere.
Data extensions on System 25 are assigned Data Dial Codes (DDCs).
Dial Code Assignments
System 25 dial codes are as follows:
Assignable System 25 dial codes may have 1, 2, 3, or 4 digits. These include voice terminal
PDCs, data terminal DDCs, Direct Group Calling (DGC) Groups, Paging Access, Attendant
(Selector Console) Park, Night Service, Modem Request, Automatic Route Selection Access,
Facility Access (trunk group), and Dictation System Access codes.
System 25 fixed dial codes are:
● 0 — Attendant access
● ✶ 1, ✶ 2, ✶ 3 — Reserved
● ✶ 4 — Activate Make-Busy for DGC group member
● ✶ 5 — Park
● ✶ 6 — Deactivate Make-Busy for DGC group member
● ✶ 7 + 0 — Group Pickup Answer
● ✶ 7 + PDC — Directed Pickup Answer
● ✶ 8 + PDC — Park Retrieval
● ✶ 9 — Camped-On/Call Waiting Call Retrieval
● ✶ ✶ 0 — Account Code Entry
● ✶ ✶ PDCPDC — Sign in PDC (Following and Forwarding)
● ✶ ✶ PDC0 — Sign out PDC (Following)
● ✶ ✶ 0 — Sign out all PDCs (Following)
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