70 DBS 576 (USA), issued January 1999 576-20-700Chapter 3. System Features Section 700 - OperationTrunk Access GroupsDescriptionTrunks can be placed in trunk groups. When a trunk group is accessed, the System automaticallyselects an open trunk from the group.OperationTo access a trunk group:Hardware Requirements• N/ARelated Programming• FF1-3: MCO AccessConsiderations• Trunks can only appear in one trunk group.• If Automatic Call Routing is enabled, the MCO access code (9 by default) automaticallyaccesses the Automatic Route Selection (ARS) features.Virtual PortDescriptionVirtual ports are not physical ports in the System. They are phantom or simulated ports used in theSystem to support:• Virtual extension ringing• Virtual floating holdUp to 96 virtual ports may be assigned per cabinet.Virtual Port used for Virtual ExtensionYou can assign an actual extension number to a virtual port. You can then assign the extension numberas any actual extension (incoming call settings and types, Station Class of Service (COS), tenantgroup, pickup group, etc.). You can also assign the virtual port to an FF key on one or more telephonesand set to ring. Any call directed to the virtual port extension number will ring the assignedtelephone(s).Action Result1. Enter a trunk access code (default trunk group access codesare 9 or 81-84).2. Dial the phone number.
