Class Of Service (Cos); Denied List - Siemens HiPath 1100 Programming Manual

Main Configurations
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Class Of Service (COS)

You can assign one of eight Classes Of Service (COS) to
each telephone
page 34). Thus, it is possible to block outgoing calls
to selected external numbers while allowing others to
proceed. All classes of service allow for answering ex-
ternal calls and making internal calls.
Classes Of Service
• No Trunk Access (No Permission):
You can only make external calls using the System
Speed Dialing (if unblocked by entering Code 072),
Class 0.
• Outward-Restricted Trunk Access:
You can only make external calls using the System
Speed Dialing phonebook or one of the Permission
Lists 1, 2 or 3 (
• Restricted Trunk Access (with Denied List):
You can make external calls but not to numbers on
Denied Lists 1, 2 or 3 (
• Unrestricted Trunk Access (Total Permission):
You can make all Class 7 external calls.

Denied List

There are three lists of denied numbers that can be con-
figured with different telephone numbers and individual
extension prefix combinations.
• Denied List 1 (COS 1) with 4 entries
• Denied List 2 (COS 2) with 10 entries
• Denied List 3 (COS 3) with 35 entries
Telephones configured for Restricted Trunk Access
(with Denied List) cannot dial numbers that start with
those combinations. If you try to dial one of these num-
bers, the extension will answer with a busy signal.
Even though restrictions are set by the lists, the num-
bers entered in the Speed Dialing directory can be ac-
cessed by dialing the assigned speed-dial numbers.
The Denied List may contain some combinations al-
ready recorded, depending on the country (
These can be deleted if needed.
Required: Programming Mode must be active (*95
31994).
Enter the code for programming.
1 2 3
page 30).
page 28).
page 31).