Comtech EF Data CDM-570A - Manual (Page 72)

CDM-570A/570AL Satellite Modem with Optional Packet Processor MN-CDM570A
Rear Panel Connectors and Pinouts Revision 2
3–10
3.2.2.3.3 G.703 RJ-48 Connection via Balanced E1/T1 Interface Connector
The optional CN-0000268 Adapter (Figure 3-4) is available for purchase from Comtech EF Data
Product Support. Use this accessory to adapt the DB-15F Balanced E1/T1 G.703 interface
connector to an RJ-48 female user interface.
CN-0000268 Adapter Pin Assignments
Signal Name
Pin #
RJ-48 (User Side) DB-15M (Modem Side)
Tx+ 1 9
Tx- 2 1
GND 3 2
Rx+ 4 11
Rx- 5 3
GND 6 4
1) This table is ordered by “Signal Name” and not by connector
pin orientation.
2) Pins 7 and 8 on the RJ-48 User Side and pins 5-8, 10, and
12-15 on the DB-15 Modem Side are not used.
Figure 3-4. CN-0000268 DB-15M  RJ-48F Adapter for Balanced E1/T1 G.703 Operation