User guide

49
Chapter 4 - Installation
Channel
8 Route and connect your channel devices to the MultiMux back panel
CHANNEL 1 - CHANNEL 4 on a MultiMux MMH904 or CHANNEL 1
- CHANNEL 8 on aMultiMux MMH908 connectors using RS232
cables. Do this at both of your sites, so that channel 1 at one site
communicates with channel 1 at the other site, and so on.
Note: Any cables connected to the computer should be shielded to
reduce interference.
Follow channel device guidelines regarding RS232 cable lengths
and make sure that the pin assignment in Appendix C of this manual
are followed.
I
O
COMPOSITE LINK
RS232C/V.35
EXTERNAL
INTERNAL
DIAL UP LEASED DIGITAL
MODEM DSU
COMMAND
MODEM
DIAL-UP
COMMAND PORT CHANNEL 8
CHANNEL 4
CHANNEL 7
CHANNEL 3
CHANNEL 6
CHANNEL 2
CHANNEL 5
CHANNEL 1
Channels
Figure 4-5. Channel Cabling
9 Execute the parameter display command to display the current
channel parameter status for your local MultiMux by entering the
following:
ATL (press Return)
The following will be displayed on your supervisory console for a
MultiMux MMH904:
Local Channel Parameter
STP FLOW ENQ/ PASS PASS
CHN SPD WORD BIT PARITY CONTROL ACK ECHO PACE EIA XON
01 19200 8 1 NONE XON/XOFF OFF OFF OFF OFF OFF
02 19200 8 1 NONE XON/XOFF OFF OFF OFF OFF OFF
03 19200 8 1 NONE XON/XOFF OFF OFF OFF OFF OFF
04 19200 8 1 NONE XON/XOFF OFF OFF OFF OFF OFF
10 Based on the listed conditions for each channel, reconfigure the
parameters to match your actual channel requirements by entering
commands as described in Chapter 4.
As you change operational parameters, they will not actually be
incorporated into your running system until you execute a Store New
Parameters (&W).