Quad E1 Interface Example; Figure 4-8. Cdm-625 Quad E1 1:1 Example - Comtech EF Data CRS-170A Installation And Operation Manual

CRS-170A L-Band 1:1 Redundancy Switch
Cables and Connections
4.2.4.4

Quad E1 Interface Example

The G.703 Balanced and Auxiliary G.703 DB‐9F single connectors are used for Quad E1
operation. Note the following:
1. As shown Figure 4‐8, the CA‐0000071 'Y' Cable provides for two ports of E1 (i.e., Ports 1/2 ‐
or‐ Ports 3/4).
2. If the user desires three or four separate ports of E1 (i.e., Port 1 and Port 2 ‐or‐ Port 3 and
Port 4), then optional adapter cables may be purchased from Comtech EF Data to adapt the
G.703 Balanced and Auxiliary G.703 DB‐9F single connector pairs to outgoing Quad E1
connector pairs as follows:
Cable (CEFD
Part No.)
CA-0000163
CA-0000164
KT-0000122
All three cabling options plug into the single 'To User' connector side of each CA‐0000071 'Y'
Splitter cable used.
CEFD Part No.
CA-0000071
Converts (1) 9-pin Type 'D' (DB-9F) paired connection (e.g., Modem A
AND Modem B G.703 Balanced connector pair –or– Modem A AND
Modem B Auxiliary G.703 connector pair) to:
(2) 15-pin Type 'D' (DB-15F) connectors
(2) RJ-48 female connectors
(4) BNC 75Ω female connectors – (2) Tx, (2) Rx
Qty Description
2 Cable – 1:1 'Y' Splitter, (2X) DB-9M
Note 1

Figure 4-8. CDM-625 Quad E1 1:1 Example

4–10
MN/CRS170A.IOM
DB-9F, 8"
Revision 9
See
App. A
Fig.
A-9
A-10
A-11