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32 ICX (International) issued October 2000 ICX-50-700
Chapter 3. System Features Section 700 - Operation
The System supports the following COSs for trunks and extensions:
• COS - Trunk/Tie
• COS - Ext/Ext Restriction
• COS - Extension Feature
• COS - Trunk to Trunk Restriction
Class of Service - Trunk/Tie
Tie/Trunk COS allows or restricts access to various features. Each trunk is assigned to one of 16 trunk
classes of service (00-15).
The following table shows the features that can be enabled/disabled for each trunk COS.
Table 4. Trunk COS
Hardware Requirements
•N/A
Considerations
•N/A
Class of Service - Ext/Ext Restriction
Ext/Ext Restriction COS allows or restricts calls placed to other extensions based upon the Extension
COS. Each Extension COS is programmed to either originate or not originate calls to another
Extension COS.
Hardware Requirements
•N/A
Considerations
•N/A
Number Feature
1 Intercom Ringing Tone (trunk or intercom ring tone)
2 Dial Tone to Tie Lines (Enable/Disable)
3 Forced Recover on Fast-Busy Tone (Send fast busy or disconnect line)
4 DDI Dialled Number Conversion Table (DDI/CLI Table A or B)
5 Paging on DISA/Tie-Line Call (Allow/Restrict)
6 DISA Security Code Verification
7 Network Flash Forwarding (Version 3.5 and higher)
8 Network Flash Receive (Version 3.5 and higher)
9 Brokers Hold for Network Calls (Version 3.5 and higher)
10 Priority Message-Waiting Set/Cancel (Version 3.5 and higher)
11 Network-to-Network Transfer (Version 3.5 and higher)
12 Camp-On for Tie-Lines (Version 3.5 and higher)