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About This Item

 

Full Description

The present document specifies the link layer used for signalling on the A-bis interface between BSC and BTS. The use and general aspects of the A-bis interface are described in 3GPP TS 48.051 and the interface aspects in 3GPP TS 48.052.

The Link Access Procedure on the D-channel (LAPD) specification used on the A-bis interface in the GSM PLMN is a subset of the EN 300 125 which in turn has less options than the CCITT Recommendation Q.921.

This description contains first the protocol definitions and second the services provided by the layer 2 to the layer 3.
 

Document History

  1. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+) (GSM); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 16.0.0 Release 16)

    • Most Recent
  2. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+) (GSM); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 15.0.0 Release 15)

    • Historical Version
  3. ETSI TS 148 056

    👀currently
    viewing


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 14.0.0 Release 14)

    • Historical Version
  4. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 13.0.0 Release 13)

    • Historical Version
  5. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 12.0.0 Release 12)

    • Historical Version
  6. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 11.0.0 Release 11)

    • Historical Version
  7. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 10.0.0 Release 10)

    • Historical Version
  8. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 9.0.0 Release 9)

    • Historical Version
  9. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 8.0.0 Release 8)

    • Historical Version
  10. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 7.0.0 Release 7)

    • Historical Version
  11. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 6.0.0 Release 6)

    • Historical Version
  12. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 5.0.0 Release 5)

    • Historical Version
  13. ETSI TS 148 056


    Digital cellular telecommunications system (Phase 2+); Base Station Controller - Base Transceiver Station (BSC - BTS) interface; Layer 2 specification (3GPP TS 48.056 version 4.0.0 Release 4)

    • Historical Version