Cronyx E1 - L/S, Руководство по установке и эксплуатации

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Modem-Converter E1-L/S
© 2006 Cronyx
Clock source from the Ethernet port is not available.
• «High gain» or «Low gain» – receive sensitivity: high (-43 dB) or low (-12 dB); receive
sensitivity influences the E1 link length;
• «HDB3» or «AMI» – line coding format.
In «Framed» mode there are additional fields shown on screen:
• «Use16» or «Skip16» – timeslot 16 assignment mode:
«Use16» – enable the data transmission via timeslot 16;
«Skip16» – the timeslot cannot be used for data transmission (is used for transmit-
ting of standard CAS clock signals in accordance with the ITU-T Recommendation
G.704).
• «CRC4= ...» – the CRC4 mode of checking of multiframe alignment:
«Gen» – Generate, CRC4 is generated and transmitted, but no checking is per-
formed on receive;
«Check» – Generate and check, CRC4 is generated, transmitted, and checking is
performed on receive (CRC4 error will cause the loss of synchronization state);
«Off» – Disabled, CRC4 checking disabled;
• «Mon=...» – selection of the E1 frame bit to be used for the monitoring channel
implementation (for service data exchange between the two interconnected E1-L
devices). Possible values are as follows: «Sa4», «Sa5», «Sa6», «Sa7» or «Sa8», – bit S
a4
,
S
a5
, S
a6
, S
a7
or S
a8
of the timeslot 0 is used (usage of these bits is in accordance with
the ITU-T Recommendation G.704) or the value in the «TsMbN» form, where M is
for the timeslot no. (from 1 up to 31), and N is for the bit no. (from 1 up to 8) of the
timeslot selected; «Off» – monitoring channel disabled.
The preceding fields may be followed by additional information as follows:
• «Loop» or «Remote loop» – indication of local or remote E1 link loopback enabled;
• «Test» – this indication is present if the BER tester for the E1 link is enabled.
The «Port» line below on screen shows the operational mode of the digital port.
For V.35/RS-530/RS-232/X.21 interfaces the fields as follows will be displayed:
•
«...
kbps» or
«...
baud» – data rate in synchronous (sync) or asynchronous (async)
mode, kbps or baud accordingly;
• «8n1», «8p1» or «7p1» – character transmission format (for the asynchronous mode
only);
• «CTS=...» – mode of the CTS signal generation;
• «Cable ...» – type of the cable attached, e.g.: «Cable direct V.35». If no cable attached
then the «No cable» message will be displayed. Cables may be of type «direct» or
«cross» (direct – for connection to DTE; cross – for connection to DCE) and V.35,
RS-530, RS-232 or X.21.
Next line on screen shows the state of interface signal lines (DTR, RTS, ETC, ERC, DSR,
CTS, CD, TXC, RXC in synchronous mode or DTR, RTS, DSR, CTS, CD in asynchro-
nous mode).
For more information please refer to the «Port» Menu chapter.