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<p>This International Standard is a part of the functional requirements for the Private Integrated Services Network (PISN)</p>
<p>and defines the functions and procedures that are required by Private Integrated Services Network exchanges (PINXs)</p>
<p>and the intervening network (IVN) in order to establish Inter-PINX Connections (IPC). The IPC is used for the transfer</p>
<p>of signalling and user information between PINXs.</p>
<p>The Private Signalling System No.1 (PSS1) as defined in ISO/IEC 11572 and 11574 defines the signalling procedures</p>
<p>and protocol for call control between PINXs at the Q reference point. These procedures are independent of the types of</p>
<p>IVNs, called scenarios used to interconnect the PINXs. ISO/IEC TR14475 describes the use of various types of IVNs</p>
<p>which provide the interconnections of PINXs.</p>
<p>In order to connect a PINX to another PINX, mapping functions are required to adapt the specific interfaces at the C</p>
<p>reference point to the application at the Q reference point. As such, mapping functions provide for physical adaptation</p>
<p>to the interface at the C reference point. Mapping functions also provide for the mapping of user channels and</p>
<p>signalling information at the Q reference point to the appropriate channels or time-slots at the C reference point. The C</p>
<p>and Q reference points are defined in ISO/IEC 11579-1.</p>
<p>The types of interfaces at the C reference point covered by this International Standard are:</p>
<p>[1] 1544 kbit/s unstructured digital leased line</p>
<p>[2] 1544 kbit/s structured digital leased line</p>
<p>[3] 2048 kbit/s unstructured digital leased line</p>
<p>[4] 2048 kbit/s structured digital leased line</p>
<p>[5] 64 kbit/s unrestricted digital leased line</p>
<p>[6] 1544 kbit/s ISDN Primary Rate user-network layer 1 interface</p>
<p>[7] 2048 kbit/s ISDN Primary Rate user-network layer 1 interface</p>
<p>[8] ISDN Basic Rate user-network layer 1 interface</p>
<p>At the Q reference point the mappings provide a 64 kbit/s service for user channels and a packet mode service for the</p>
<p>signalling channel. The applied mapping is a static mapping, i.e. there is a fixed relationship between user and</p>
<p>signalling channels at the Q reference point and the timeslots of the interface at the C reference point. Any changes are</p>
<p>subject to administrative actions.</p>
<p>This International Standard specifies PINX mapping functions between the Q reference point and the C reference point</p>
<p>for IVNs which provide either dedicated or semi-permanent, non-user activation, circuit-mode IPCs. The dedicated IPC</p>
<p>is the connection permanently established, usually for the duration of a contractual period. The semi-permanent IPC is</p>
<p>the connection whose resources are reserved for specified times during a contractual period. The semi-permanent IPC is</p>
<p>established by management control with or without user activations. In this International Standard, the semi-permanent</p>
<p>IPC established by management control with user activation is outside the scope.</p>
<p>The IVN can be a dedicated physical link, dedicated transmission system or a cross connect system, or semi-permanent</p>
<p>connection system. IVNs which include inverse mulitlexer techniques (e.g. channel aggregation in accordance with</p>
<p>ISO/IEC 13871) are covered by this International Standard so far as they support one of the interfaces listed above.</p>
<p>This International Standard also specifies mapping information. At both sides of the PINX, mapping information is</p>
<p>required to administer the scenarios.</p>
<p>This International Standard is applicable to PINXs which can be interconnected to form a Private Integrated Services</p>
<p>Network (PISN) and which support signalling protocols at the Q reference point.</p>
Reģistrācijas numurs (WIID)
23547
Darbības sfēra
<p>This International Standard is a part of the functional requirements for the Private Integrated Services Network (PISN)</p>
<p>and defines the functions and procedures that are required by Private Integrated Services Network exchanges (PINXs)</p>
<p>and the intervening network (IVN) in order to establish Inter-PINX Connections (IPC). The IPC is used for the transfer</p>
<p>of signalling and user information between PINXs.</p>
<p>The Private Signalling System No.1 (PSS1) as defined in ISO/IEC 11572 and 11574 defines the signalling procedures</p>
<p>and protocol for call control between PINXs at the Q reference point. These procedures are independent of the types of</p>
<p>IVNs, called scenarios used to interconnect the PINXs. ISO/IEC TR14475 describes the use of various types of IVNs</p>
<p>which provide the interconnections of PINXs.</p>
<p>In order to connect a PINX to another PINX, mapping functions are required to adapt the specific interfaces at the C</p>
<p>reference point to the application at the Q reference point. As such, mapping functions provide for physical adaptation</p>
<p>to the interface at the C reference point. Mapping functions also provide for the mapping of user channels and</p>
<p>signalling information at the Q reference point to the appropriate channels or time-slots at the C reference point. The C</p>
<p>and Q reference points are defined in ISO/IEC 11579-1.</p>
<p>The types of interfaces at the C reference point covered by this International Standard are:</p>
<p>[1] 1544 kbit/s unstructured digital leased line</p>
<p>[2] 1544 kbit/s structured digital leased line</p>
<p>[3] 2048 kbit/s unstructured digital leased line</p>
<p>[4] 2048 kbit/s structured digital leased line</p>
<p>[5] 64 kbit/s unrestricted digital leased line</p>
<p>[6] 1544 kbit/s ISDN Primary Rate user-network layer 1 interface</p>
<p>[7] 2048 kbit/s ISDN Primary Rate user-network layer 1 interface</p>
<p>[8] ISDN Basic Rate user-network layer 1 interface</p>
<p>At the Q reference point the mappings provide a 64 kbit/s service for user channels and a packet mode service for the</p>
<p>signalling channel. The applied mapping is a static mapping, i.e. there is a fixed relationship between user and</p>
<p>signalling channels at the Q reference point and the timeslots of the interface at the C reference point. Any changes are</p>
<p>subject to administrative actions.</p>
<p>This International Standard specifies PINX mapping functions between the Q reference point and the C reference point</p>
<p>for IVNs which provide either dedicated or semi-permanent, non-user activation, circuit-mode IPCs. The dedicated IPC</p>
<p>is the connection permanently established, usually for the duration of a contractual period. The semi-permanent IPC is</p>
<p>the connection whose resources are reserved for specified times during a contractual period. The semi-permanent IPC is</p>
<p>established by management control with or without user activations. In this International Standard, the semi-permanent</p>
<p>IPC established by management control with user activation is outside the scope.</p>
<p>The IVN can be a dedicated physical link, dedicated transmission system or a cross connect system, or semi-permanent</p>
<p>connection system. IVNs which include inverse mulitlexer techniques (e.g. channel aggregation in accordance with</p>
<p>ISO/IEC 13871) are covered by this International Standard so far as they support one of the interfaces listed above.</p>
<p>This International Standard also specifies mapping information. At both sides of the PINX, mapping information is</p>
<p>required to administer the scenarios.</p>
<p>This International Standard is applicable to PINXs which can be interconnected to form a Private Integrated Services</p>
<p>Network (PISN) and which support signalling protocols at the Q reference point.</p>
