The tested telecom equipment / line	The tested parameter, the type of the test	The test standard
Line testing of ISDN, xDSL network elements (NT, TE, DSLAM, Modem, line conditioner). Control of TDR testers. Support of development tests.	Determined by the customer. 2	Determined by the customer.
ADSL modem "fast-test"	attainable bit-rate, noise-margin, transmit signal power versus the subscriber line (length, diameter, crosstalk noise).	partially ETSI TS 101 388
ISDN-PRI Network Termination (NT) Layer1 testing	Pulse shape, Impedance towards ground, Bit-rate, Phase-jitter Line coding, Return loss, Immunity to attenuations and reflections Unbalance, jitter tolerance, Frame structure, Frame alignment, CRC processing	ETSI TS 300 011
ISDN-BRI Network Termination (NT) Layer1 testing	Bit-rate, Phase-jitter, Impedance, Pulse shape, Unbalance Layer1 frame organization, Layer1 functional tests Power feeding tests	ETSI TS 300 012
General testing of ITU-T G series interfaces (64kbit/s, 2Mbit/s, STM-1)	Pulse-shape, Bit-rate accuracy, Jitter	ITU-T G.703
General testing of ITU-T V series interfaces	Pulse-shape, Bit-rate accuracy, Jitter	ITU-T V.11, V.28
Control of (Bit Error Ratio) BER-testers	Bit-rate, Interface, Measurement range, ES, EFS detection, G.821 evaluation	ITU-T V.11, V.28
High bit-rate data transmission on metallic cables; High bit-rate Digital Subscriber Line (HDSL) (Examples: a pair of modems)	Functional and electrical tests Details: Loop reach. Parameters: Bit-rate, Line type, Noise profile Micro-interruption Return loss and unbalance Power spectral density Aggregate transmit power 2048 kbit/s user-interface	ETSI TS 101 135 V1.5.3 (2000-09) Transmission and Multiplexing (TM); High bit-rate Digital Subscriber Line (HDSL) transmission systems on metallic local lines; HDSL core specification and applications for combined ISDN-BA and 2048 kbit/s transmission
High bit-rate data transmission on metallic cables; Symmetric single pair high bitrate Digital Subscriber Line (SDSL) (Examples: access multiplexer, modem)	Functional and electrical tests Details: Loop reach. Parameters: Bit-rate, Line type, Noise profile Return loss and Unbalance Transmitter power spectral density	ETSI TS 101 524 V1.2.1 (2003-03) Transmission and Multiplexing (TM); Access transmission systems on metallic access cables; Symmetric single pair high bitrate Digital Subscriber Line (SDSL)
ISDN Telephony 3,1 kHz teleservice; Handset terminals (Example: telephone set)	Attachment requirements to connect to an ISDN Details: Frequency response, Loudness Ratings, Sidetone, Terminal Coupling Loss Distortions Out-of band signals, noise, delay	ETSI TBR8:1998 Integrated Services Digital Network (ISDN); Telephony 3,1 kHz teleservice; Attachment requirements for handset terminals
Terminal equipment using 2048 kbit/s unstructured leased line access (Examples: private exchange PABX)	Attachment requirements to connect to the network Details: Pulse shape, Bit-rate Phase-jitter Line coding, Overvoltage protection,	ETSI TBR12:1993 2 048 kbit/s digital unstructured leased line (D2048U) Attachment requirements for terminal equipment
Terminal equipment using 2048 kbit/s structured leased line access (Examples: private exchange PABX, ISDN-VoIP gateway)	Attachment requirements to connect to the network Details: Pulse shape, Bit-rate Phase-jitter Line coding, Overvoltage protection, Frame structure, Frame alignment, CRC processing	ETSI TBR13:1996 2 048 kbit/s digital structured leased line (D2048S) Attachment requirements for terminal equipment

Comments:

• 1
  The precalculated duration of the test in case of good CTPI.
• 2
  During the test of the network elements the subscriber lines are substituted by the line simulators of the laboratory.
• 3
  Even the customers themselves can perform the not accredited test, under the control and technical help of the members of the laboratory.
• 4
  The laboratory certificates the calibrated and traceable state of the test sets used for the not accredited tests on demand.