Section 700 - Operation Chapter 3. System FeaturesICX-35-700 ICX (International), issued March/1998 53• The ability to make extension name assignments is allowed/restricted to anyone with a Class ofService (COS) that allows access to User Maintenance features. (See Chapter 4 “UserMaintenance” of this document.)Network FacilitiesDescriptionThe System supports networking facilities such as:• Network Attendant Reversion (Version 3.5 and higher)• Network Call Routing• Network Call Transfer• Network Centralized Attendant (Version 3.5 and higher)• Network Centralized Voice Mail (Version 3.5 and higher)• Networking Extension Calling• Network Flash Transfer (Version 3.5 and higher)• Network Hold (Version 3.5and higher)• Network Paging• Network Transfer Recall (Version 3.5 and higher)• Tandem CallingFor more information on System Networking, see the System Networking Reference Manual.Network Attendant ReversionCPC-96, CPC-288, and CPC-576 Version 3.5Network Attendant Reversion enables calls to revert to the attendant in the same CCU. Calls will notrevert if the CCU receiving the call has no attendant. Network Attendant Reversion does not workwith Network Hold.Network Call RoutingNetwork Call Routing allows multiple systems that are interconnected in a network, to direct calls to aspecific tie line based on the number dialled. The call does not leave the network.Network Call TransferNetwork Call Transfer allows a call at an extension to be transferred to another extension in thenetwork.Network Centralized Voice MailCPC-96, CPC-288, and CPC-576 Version 3.5Network Centralized Voice Mail allows one primary attendant group in the network to handle networkattendant calls.Related Programming• FF6-2-04: Route Table: Digit Modify Pattern No.