Comtech-ef-data MIDAS 4 System and Design Manual de usuario Pagina 122

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System and Design Manual, Revision 2
6–24 Traffic Node
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The SNM-1000 provides a user port interface for requesting establishment and
termination of data and video circuits, sending and receiving service messages,
installation and diagnostics. The user port can also be used by customer
equipment such as routers for requesting circuit establishment and termination.
The port is configured as a DCE with the pinout
described in Table 6-1.
Table 6-1. User Port Pinout
Connector Type 9-pin DIN Connector
Signal type EIA-232
Pin Name
1 US_RR-232
2 US_RD-232
3 US_SD-232
4 US_TR-232
5 GND
6 US_DM-232
7 US_RS-232
8 US_CS-232
9 US_RI-232
The interface operates at 19.2 kbps, 8 data bits, 1 stop bit, no parity and
responds to ASCII characters in the range of 0x00 to 0x7F.
The 8th bit (most
significant) is not generated on the transmit side and is ignored on the receive
side.
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