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Destination Point Codes Assignement

Destination Point Codes Assignement. IFAST-14 Lima, Perú October 4-5, 2000. Telefónica Móviles S. A. U. October 2000. Current situation. There are two overlapping signalling networks: ITU Standard for voice traffic. ANSI Standard for Roaming Call delivery.

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Destination Point Codes Assignement

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  1. Destination Point Codes Assignement IFAST-14 Lima, Perú October 4-5, 2000 Telefónica Móviles S. A. U. October 2000

  2. Current situation • There are two overlapping signalling networks: • ITU Standard for voice traffic. • ANSI Standard for Roaming Call delivery. This is an undesired situation, due to the interstandard IS –41, generally adopted in non-GSM networks, is an ANSI development

  3. Destination Point Codes (DPC’s) • ANSI and ITU signalling Networks use different DPC’s numbering plan. • While ITU DPC’s are assigned internationally and are widely used in voice traffic, ANSI DPC’s are supposed to be used internally in the United States. • The fact is that ANSI DPC’s are the only way to establish roaming between IS-41 Signalling Networks. Non GSM Cellular Operators are compelled to use ANSI codes for roaming

  4. application data exchange IS-41 MAP IS-41 MAP ON ANSI TCAP ON ANSI TCAP GATEWAY STP ANSI SCCP/MTP ANSI ITU-T SCCP/MTP SCCP/MTP ITU-T SCCP/MTP Destination Point Codes (DPC’s) This configuration requires a mapping between ANSI and ITU DPC’s

  5. IS-41 MAP IS-41 MAP ON ANSI TCAP ON ANSI TCAP GATEWAY STP ANSI SCCP/MTP ANSI ITU-T SCCP/MTP SCCP/MTP ITU-T SCCP/MTP NON ANSI COUNTRY ANSI COUNTRY ITU-T PC • ITU-T PC • ANSI PC Destination Point Codes (DPC’s)

  6. IS-41 MAP IS-41 MAP ON ANSI TCAP ON ANSI TCAP GATEWAY STP ANSI SCCP/MTP ANSI ITU-T SCCP/MTP SCCP/MTP ITU-T SCCP/MTP NON ANSI COUNTRY ANSI COUNTRY • ANSI PC • ANSI PC • ITU-T PC Destination Point Codes (DPC’s)

  7. ANSI DPC´s Assigment • ANSI Comitee is responsible for this assigment (T1S1) • Telcordia performs the assigment under a set of rules that do not consider the use of the DPC’s outside of USA. The assigment procedure can only be modified by ANSI Comitee.

  8. How DPC’s are being used Outside the U.S.? A U.S. Signalling Carrier, that has a DPC’s range assigned, uses part of its codes for addressing Southamerican, and Asian Operators. or The signalling Carrier performs a translation between ANSI DPC’s and International ITU codes. In both situations, Operators don’t have their own DPC’s, which are really assigned to the signalling Carriers

  9. What’s wrong with this situation? • DPC’s must be set up in all networks which have roaming agreements. • Up to now, roaming business was not very developed, and only a limited number of roamig agreements were established. • An eventual change of DPC is an importanttask that must be performed in all networks at the same time. With the growth of roaming agreements, such a change will become a really difficult task. If operators don’t own their DPC’s, they are constrained to modify such key parameters if they want to change to a different signalling Carrier

  10. Conclusions • A key parameter like DPC’s, cannot be out of the control of the Operators. • The current situation is an obstacle for the opening of the market, making competition difficult which is a driving factor for the industry and operators. There should be a change in ANSI directives in order to provide South American Cellular Operators with DPC’s for roaming purposes. This will facilitate the growth of roaming agreements, with a direct effect on Carriers profits.

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