2 References
3GPP48.054Base Station Controller - Base Transceiver Station (BSC - BTS) interfaceLayer 1 structure of physical circuitsRelease 17TS
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[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TS 48.020: "Rate adaption on the Base Station System ‑ Mobile‑services Switching Centre (BSS ‑ MSC) interface".
[3] 3GPP TS 48.051: "Base Station Controller ‑ Base Transceiver Station (BSC ‑ BTS) interface; General aspects".
[4] 3GPP TS 48.056: "Base Station Controller ‑ Base Transceiver Station (BSC ‑ BTS) interface; Layer 2 specification".".
[5] 3GPP TS 48.060: "In-band control of remote transcoders and rate adaptors for full rate traffic channels".
[6] 3GPP TS 48.061: "In-band control of remote transcoders and rate adaptors for half rate traffic channels".
[7] ITU-T Recommendation G.703: "Physical/electrical characteristics of hierarchical digital interfaces".
[8] ITU-T Recommendation G.705: "Characteristics of plesiochronous digital hierarchy (PDH) equipment functional blocks".
[9] ITU-T Recommendation G.711: "Pulse Code Modulation (PCM) of voice frequencies".
[10] ITU-T Recommendation G.732: "Characteristics of primary PCM multiplex equipment operating at 2 048 kbit/s".
[11] ITU-T Recommendation I.460: "Multiplexing, rate adaption and support of existing interfaces".