CDM-570/570L Satellite Modem with Optional IP Module Revision 12
Front Panel Operation MN/CDM570L.IOM
5–27
5.2.2.1.5 CONFIG: CEx (G.703 Clock Extension)
G703 Clock Extend: None
TxLock RxEnable (◄ ►,ENT)
Use the
◄ ► arrow keys to select None, TxLock or RxEnable, and then press ENTER.
Selecting TxLock or RxEnable displays the following submenu:
Clk Extend Interface: T1
E1Bal E1Unbal (◄ ►,ENTER)
Use the
◄ ► arrow keys to select the appropriate G.703 Clock Extension interface – T1, E1Bal,
or E1Unbal – and then press ENTER.
5.2.2.1.6 CONFIG: Frame (Framing Mode)
Framing Mode: Unframed
EDMAC EDMAC-2 (◄ ►,ENT)
Use the
◄ ► arrow keys to select Unframed, EDMAC, or EDMAC-2, and then press ENTER.
Note the following:
Selection Description
Unframed
No framing is selected, no overhead is added, and the modem is with other manufacturers’
equipment when operating in a ‘standard’ configuration.
EDMAC
EDMAC-2
Comtech EF Data’s proprietary framing is added. The framing permits the bi-directional passing of
M&C and AUPC data between local and distant-end units.
5.2.2.1.6.1 (CONFIG: Framing Mode) EDMAC or EDMAC-2
EDMAC is backward compatible with the CDM-500, CDM-550, CDM-550T, CDM-600 and
CDM-600L. EDMAC-2 is a reduced overhead version of EDMAC, and while it is not completely
backward compatible with the modems mentioned here, it is backward compatible in some modes
(for example, in Turbo BPSK modes and at rates above 2.048 Mbps).
Selecting EDMAC or EDMAC-2 displays the following submenu:
Framing mix: AUPC-Only
AUPC+EDMAC (◄ ►,ENTER)
Note: When EDMAC or EDMAC-2 framing is enabled, AUPC is automatically enabled but the
specific EDMAC feature (passing M&C data from a local to a distant-end unit) requires further
configuration.
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