AT&T System 25 - Manual (Page 8)

Single-Line Features
Account Code Entry
For bookkeeping purposes, your System Administrator may
assign account codes to use with certain calls. If you are
required to use account codes for outgoing calls, the account
code must be entered before you can place an outgoing call. If
this feature is not mandatory, you may still use the Account
Code Entry feature.
See your System Administrator to verify the types of calls, if
any, for which you must enter an account code.
Account Code Entry - Outgoing Calls
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Listen for dial tone, then press * 0 .
❑ ❑
Dial the account code.
NOTE: If you make a mistake while entering the account
❑ ❑
code, press * 0 again, then the correct account code.“
Listen for dial tone.
Dial the outside line access code and listen for dial tone
again.
Dial the telephone number.
(Continued)
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