Comtech EF Data CDM-760 - Manual (Page 114)

Front Panel Operation Revision 2
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
6–28
Using this computation example, if the modem Tx is set to 100 Mbps, then the remaining
30.232 Mbps is allocated to the Ethernet traffic type:
100Mbps – 69.767Mpbs = 30.232Mbps
• The best practice for Entering or Exiting MultiStream Mode is to do these steps:
A. ENTER MULTISTREAM MODE
Step Task
1 Use the CONFIG: Intf menu to select any combination of GbE interface
operation:
• GBEI1 / J5 | DATA
port
• GBEI2 / J6 | DATA
port
• Optical / J7 |OPTICAL
port
2 Make sure that both interface slots (PIIC1 and PIIC2) are set as either
NONE (not installed) or OFF (not active).
You will know the total Tx data rate that the modem permits
after completing this step. Make sure this Tx data rate is
sufficient for transmitting the intended aggregate interface
type services.
3 Configure the modem settings for MultiStream Mode operation:
a) Select the Tx parameters for the carrier that will act as the aggregate
carrier of all interface types to be transmitted.
b) Choose the correct ModCods, Pilots, Symbol Rate, etc., to make sure
that the total Tx uplink is sufficient for all of the interface types that
will be multiplexed together.
4 Return to the CONFIG: Intf menu and make sure one or both of the PIIC
data interface traffic types can operate.
If the configured Tx data rate capacity is not sufficient for the
PIIC selection, the modem rejects this setting. If this happens,
start again at Step 1 to correct the configuration.
B. EXIT MULTISTREAM MODE
Step Task
1 Use the   arrow keys to select the CONFIG: Intf menu.
2 Make sure that both interface slots (PIIC1 and PIIC2) are set either to Off
(not active) or NONE (not installed).
3 Make sure that both GbE interfaces (GBEI1 and GBEI1) are set as Off (not
active).
4 Make sure that the Optical interface (J7 | OPTICAL port SFP module) is set
as NONE (not installed).