This TR studies the POTS electrical compatibility requirements that could apply to ADSL modems when connected in parallel with POTS terminals, e.g. when using microfilters or when the central splitter does not have a DC blocking function.
Equipment Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 2-4: Specification of environmental tests; Stationary use at non-weatherprotected locations
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Operator Determined Barring (ODB) (3GPP TS 22.041 version 16.0.0 Release 16)
Digital cellular telecommunications system (Phase 2+) (GSM); Substitution and muting of lost frames for Enhanced Full Rate (EFR) speech traffic channels (3GPP TS 46.061 version 16.0.0 Release 16)