Nortel Modular Ics 6.1 Installer Guide
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Remote system access / 91 P0603534 02Modular ICS 6.1 Installer Guide The DISA DN and the Auto DN allow auto-answer private network and DID calls, in the same way that calls on auto-answer loop start and auto-answer E&M trunks can be answered, with or without DISA. These DNs are described in System prgming under Access codes. Remote access on Direct Inward Dial (DID) trunks Remote system access on DID trunks is similar to that of E&M trunks connected to a private network. The main differences are: • a remote caller is on the public network dialing standard local or long-distance telephone numbers • the digits received are delivered by the central office • DISA cannot be administered to a DID trunk As with a private network, the dialed digits may be programmed to match those of a specific target line DN, the DISA DN or the Auto DN. Remote access on PRI trunks Remote system access on PRI trunks is similar to that of E&M trunks connected to a private network. The main differences are: • a remote caller is on the public network dialing standard local or long-distance telephone numbers • the digits received are delivered by the central office • answer with DISA cannot be administered to a PRI trunk since PRI trunks are set to autoanswer. As with a private network, the dialed digits may be programmed to match those of a specific target line DN, the DISA DN, or the Auto DN.
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P0603534 02Modular ICS 6.1 Installer Guide Controlling system access Modular ICS programming provides several ways of protecting your Norstar system from unauthorized access or use. These features are used in combination to provide control both to users and to lines. Class of Service Class of Service (COS) refers to the capabilities that Norstar provides to users who access the system from the public or private network. A password defines which set of capabilities the user has access to. The COS includes: • filters that restrict dialing on the line • an access package defines the set of line pools that may be accessed and whether or not the user has access to the paging feature The COS that is applied to an incoming remote access call is determined by: • the filters that you apply to the incoming trunk • the Class of Service password that the caller used to gain access to the Norstar system In cases where DISA is not automatically applied to incoming calls, the remote caller can change the class of service by dialing the DISA DN and entering a COS password. To program COS passwords, see Passwords on page 401 and the Modular ICS 6.1 System Coordinator Guide.
94 / Controlling system access Modular ICS 6.1 Installer GuideP0603534 02 Restriction filters Restriction filters can be used to restrict the numbers that may be dialed on any external line within your Norstar system. Up to 100 restriction filters can be created for the system. A restriction filter consists of up to 48 restrictions with associated overrides. To restrict dialing within the system, you can apply filters to: • outgoing external lines (as line restrictions) • telephones (as set restrictions) • external lines on specific telephones (as line/set restrictions) Restriction filters can also be specified in Restriction Service, for times when the system is operating according to a Schedule. See Services on page 371 for more details. Dialed digits must pass both the line restrictions and the set restrictions. The line/set restriction overrides the line restriction and set restriction. Refer to the following diagrams.
Controlling system access / 95 P0603534 02Modular ICS 6.1 Installer Guide Line restrictions In the previous diagram, a caller using line 1 could only dial long-distance numbers to area codes 212 and 718. A caller using line 3 could not dial any long-distance numbers. A caller using line 5 could dial long-distance numbers to area codes 212, 718, and 415. Tips - Set restrictions have no effect on numbers dialed on an E&M trunk. To restrict dialing outside the system, once a caller gains remote access, you can apply restriction filters to incoming external lines, as remote restrictions. Line/Set restriction Set restriction line 1 line 3 line 5 Line restriction line 1 line 3 line 5 no long distance except area codes 212, 718, 415no long distance except area codes 212, 718no long distance except area codes 212 718, 214, 713 no long distance no long distance Line restriction Line/set restriction line 1line 1 line 3 line 3 line 5 line 5 no long distance no long distance no long distance except area codes 212, 718, 415no long distance except area codes 212, 718no long distance except area codes 212, 718, 214, 713 Set restriction
96 / Controlling system access Modular ICS 6.1 Installer GuideP0603534 02 Remote caller restrictions In this case, dialed digits must pass both the remote restriction and the line restriction. A remote caller can override these filters by dialing the DISA DN and entering a COS password. For restriction filter programming instructions, see Restrictions on page 339 and the Modular ICS 6.1 System Coordinator Guide. Direct inward system access (DISA) To control access from the public or private network, you can configure auto-answer trunks to answer with DISA. Remote callers hear a stuttered dial tone and must then enter a COS password. The password they enter determines what access they are allowed in the system. Auto-answer loop start and E&M trunks are configured to answer with DISA by default. For DISA programming instructions, see Ans with DISA on page 360. Remote callerRemote restriction no long distance except area code 212, 718no long distance except area code 212, 718, 416 no long distance except area code 212, 718, 416 Line pool access code 81Line 1 Line 3 Line filter
Controlling system access / 97 P0603534 02Modular ICS 6.1 Installer Guide In addition to public network connections, Norstar Modular ICS can be integrated into an existing private network, or to other Norstar or Meridian 1 systems to form a corporate telecommunications network. Tips - You must have one E&M/DISA Trunk Cartridge to provide DTMF receivers for every two auto-answer loop start trunks on Loop Start or CI Trunk Cartridges. DID and PRI trunks cannot be configured to answer with DISA. If you want incoming DID or PRI calls to be answered with DISA, configure the system with a DISA DN. Incoming calls that map onto the DISA DN are then routed to a line that has DISA.
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P0603534 02Modular ICS 6.1 Installer Guide Networking with Norstar There are a number of ways you can network Norstar systems together, or network Norstar systems with other Nortel systems into private networks. What types of lines you use to perform the networking will determine the type of services that can be shared between systems. Keep in mind that each node (Norstar system) is considered an external system by every other node within the network, even though, to the users, it appears to be all one system. This affects how you configure call transfer and call out features on each system. On the home node, all features are configured as local numbers. On all other nodes, all features directed to the home node are configured with external numbers. As well, each node must have a unique identifying code. What this code will be, and how it is configured for the user, depends on what type of trunks and dialing rules you choose to use. If the network has a Meridian as part of the network, the Meridian administrator will determine identification codes for the systems. This section describes various configurations of private networks. The general settings that are required to set up the home node for each system are provided to give you a sense of what is required for each type of network. The common goal is to provide the user with the sense that the network is one large system that provides common access to colleagues in other buildings, cities, or countries. In some systems they may need to enter a destination code before the local number to route the call to the correct system. In other systems, using a common dialing plan allows users to dial colleagues at any location simply by entering the same number of digits they would use to dial a colleague at the next desk.
100 / Tie-line networking Modular ICS 6.1 Installer GuideP0603534 02 Tie-line networking Norstar uses enhanced trunking to join other Norstar or customer equipment in a private network. This allows authorized users access to tie lines, central office lines, and Norstar features from outside the Norstar system. Callers using the Norstar Modular ICS system can: • call directly to a specific Norstar telephone • select an outgoing tie line to access a private network • select an outgoing tie line to access features that are available on the private network • select an outgoing central office line to access the public network • use all of the Norstar features Callers in the public network can: • call directly to one or more Norstar telephones • call into the Norstar system and select an outgoing tie line to access a private network • call into the Norstar system and select an outgoing central office line to access the public network DID trunks Loop start trunks PRI trunks BRI trunksPublic/ Private Networks T1 trunks E&M trunks Norstar PRI SL-1 trunks