Nortel BCM50 2.0 Installation Manual

Also see for BCM50 2.0: User guide System overview guide User guide Configuration guide User guide

Contents

Nortel BCM50 2.0 Installation Manual Manual pdf 34 page image

34 Chapter 5 ISDN overviewNN40020-309NN40020-309Call by Call Service Selection for PRIPRI lines can be dynamically allocated to different service types with the Call by Call feature. PRIlines do not have to be pre-allocated to a given service type. Outgoing calls are routed through adedicated PRI Pool and the calls can be routed based on various schedules.The service types that may be available, depending on your service provider are• Public: Public service calls connect your BCM50 set with a Central Office (CO). DID andDOD calls are supported.• Private: Private service calls connect your BCM50 set with a Virtual Private Network. DID andDOD calls are supported. A private dialing plan may be used.• TIE: TIE services are private incoming and outgoing services that connect Private BranchExchanges (PBX) such as BCM50.• FX (Foreign Exchange): FX service calls logically connect your BCM50 telephone to a remoteCO. It provides the equivalent of local service at the distant exchange.• OUTWATS: OUTWATS is for outgoing calls. This allows you to originate calls to telephonesin a specific geographical area called a zone or band. Typically a flat monthly fee is chargedfor this service.• Inwats: Inwats is a type of long distance service which allows you to receive calls originatingwithin specified areas without a charge to the caller. A toll-free number is assigned to allow forreversed billing.Consult your customer service representative to determine whether or not this feature iscompatible with your provider.Emergency 911 dialingThe ISDN PRI feature is capable of transmitting the telephone number and internal extensionnumber of a calling station dialing 911 to the Public Switched Telephone Network (PSTN). Stateand local requirements for support of Emergency 911 dialing service by Customer PremisesEquipment vary. Consult your local telecommunications service provider regarding compliancewith applicable laws and regulations. For most installations the following configuration rulesshould be followed, unless local regulations require a modification.• All PSTN connections must be over PRI.• In order for all sets to be reached from a Public Safety Answering Position (PSAP), the systemmust be configured for DID access to all sets. In order to reduce confusion, the dial digits foreach set should be configured to correspond to the set extension number.Note: Call by Call Service Selection for PRI is only available in NorthAmerica.Note: Emergency 911 dialing is only available in North America.