Telephone User Manual

Quick-Start Programming Programming Initial ISDN Options
Revised April 2000 DBS-EX23-530 3-10
Typical Central Office Configurations
Note:Unless stated all other default values are correct.
Lucent (AT&T) 4ESS
CO Type (0) 4ESS
NSF- None(0) or MegaCom(2) – Depends on service requested from CO.
ISDN international code deduct “011” - Set to (1) Deduct “011” from
being sent in Setup message to CO.
ISDN Long Distance “1”Code Deduction - Set to (1) Deduct “1” from
being sent in Setup message to CO.
Lucent (AT&T) 5ESS
CO Type (1) 5ESS
ISDN international code deduct “011” - Set to (1) Deduct “011” from
being sent in Setup message to CO.
Nortel (NT) DMS-100
CO Type (3) DMS100 This is the default setting.