Chapter 1 General Information
MX-2100/2104
Installation and Operation Manual
1-48 Application Considerations
V.36/RS-422/RS-530 Interface (Module KML.3)
The RS-530 interface supports all the interface signals specified by EIA RS-530,
with the following exceptions:
•
Refer to the notes regarding the RTS, CTS and DSR signals presented for the
V.35 interface.
•
The DTR signal is not supported. The line is used as ERC (external receive
clock) output line.
X.21 Interface (Module KML.4)
The X.21 interface provides partial support for interface signals. The signals not
fully supported are as follows:
•
The C (control) signal is constantly ON.
•
The I (indication) signal is used as follows:
−
When the I signal is ON, the interface operates normally.
−
When the signal is OFF, MX-2100 sends a continuous MARK (binary "1") on
the main link.
G.703 Codirectional Interface (Module KML.5)
The G.703 codirectional interface complies with all the requirements of ITU-T
Rec. G.703 applicable to codirectional interfaces. This interface supports only data
rates of 64 and 128 kbps.
Standard DDS CSU/DSU (Module KML.6)
The KML.6 main link interface complies with AT&T Pub. 62310: Standard Digital
Data Service (DDS), Channel Interface Specifications. The interface supports data
rates of 9.6, 19.2, and 56 kbps.
T1 Link Interface (Module KML.7)
The KML.7 module supports both the D4 (SF) and ESF framing formats, in
accordance with user's selection. Zero suppression over the line is user-selectable
(transparent (AMI) coding, B7ZS, or B8ZS).
The T1 line interface meets the requirements of AT&T TR-62411, ANSI T1.403,
and ITU-T Rec. G.703, G.704. Jitter performance complies with the requirements
of AT&T TR-62411.
E1 Link Interface (Module KML.8)
The E1 link interface meets the requirements of ITU-T Rec. G.703, G.704, and
G.732, and supports both 256N and 256S multiframes (2 or 16 frames per
multiframe, respectively), in accordance with user's selection. The KML.8 module
also supports the CRC-4 option, including support for the E bit, as specified in
ITU-T Rec. G.704, thereby allowing the carrier to monitor the link to MX-2100.
CRC-4 use is user-programmable.