1.4.2 Release Notes for Remote Office and RLC 31December 2003Bridge PortsBridge Ports provide integration between the host PBX dialing plan and theRemote Office 9150 unit local dialing plan. To determine the correct Bridge Portconfiguration for your particular Remote Office network, you must first considerthe resource usage of both the Remote Office 9150 unit and RLC. The exampleson pages 33–36 illustrate the most common resource usage scenarios in aRemote Office network. Configure a Bridge Port TN on the host PBX as a voiceport. For further information, refer to the Reach Line Card Installation andAdministration Guide (NTP 555-8421-210). For Remote Office 9150 BridgePort configuration, refer to the Remote Office 9150 Installation andAdministration Guide (NTP 555-8421-215).TerminologyIn the following configuration examples, a local call is defined as a call thatterminates on a Local Calling key of a digital telephone set connected to aRemote Office 9150 unit. This call can be from another local user, or an inboundcall from the PSTN through the BRI circuits on the Remote Office 9150 unit.The primary DN is the first key on the digital telephone set connected to RemoteOffice 9150 unit that has a DN provided by the host PBX.Note: Bridge Ports use the primary DNs of Local and Remote digital telephonesets connected to Remote Office 9150 units to transfer local calls to the hostPBX or to conference host PBX calls to local calls. The primary line key mustbe idle for the Bridge Port to function properly. When transferring andconferencing local calls, Bridge Port connections are established from theprimary DN on the digital telephone set of the local call. If the primary DN ofthe digital telephone set connected to the Remote Office 9150 unit is in use, thenthe Bridge Port cannot be established.