Nokia DNT2Mi-fp Manual do Utilizador descarregar pdf (Página 40)

DNT2Mi-fp Data Network Terminal User manual

40 (60) © Nokia Corporation DN0445814

Nokia Proprietary and Confidential Issue2-0en

Data lead time

Data lead-time means the time which is needed to transfer the data from the

incoming 2M data interface of ACL2i to the outgoing 2M data interface of

DNT2Mi-fp at the other end of the line.

The lead-time of the data from ACL2i to DNT2Mi-fp depends on the line rate

selected as follows:

Table 6. 2 M data interface

Interface type G.703 (2 Mbit/s) 120-ohm symmetrical

Maximum allowed timing jitter at receiver

timing

According to ITU-T G.823

Maximum generated timing jitter at

receiver timing

According to ITU-T G.823

Frame structure According to ITU-T G.704

Relevant ETSI ONP standards ETS 300 246, ETS 300 247,

ETS 300 418, ETS 300 419

Electrical characteristics According to ITU-T G.703 2048 kbit/s

Common mode rejection 50 dB

Return loss (120 or 75 ohms;1 kHz to 4.5

MHz)

20 dB

Connector RJ-45

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Nokia DNT2Mi-fp Manual do Utilizador Página 40