Loopback (Ce3 Interface) - 3Com 3C13618 Command Reference Manual

can configure the E1 channel of CE3 interface to work in framing mode (Channelized
E1 mode).
By default, E1 channels work in framing mode.
After unframed is configured on an E1 channel, it will not include the frame control
information, nor divide time slots, or implement time slot binding. And the system will
automatically create a serial interface whose number is serial number /
line-number:0 and whose rate is 2048 kbps. The interface has the same logic feature
as that of a synchronous serial interface; therefore, it can be regarded as a
synchronous serial interface for further configuration.
For related commands, see e1 channel-set.
Example
# Set the first E1 channel on the E3 interface to work in unframed mode.
[3Com-E3-0]e1 1 unframed

3.6.10 loopback (CE3 Interface)

Syntax
loopback { local | payload | remote }
undo loopback
View
CE3 interface view
Parameter
local: Loops the CE3 interface back internally.
payload: Places the CE3 interface in external payload loopback. Data passes the
framer and will loop back after payload is generated.
remote: Loops the CE3 interface back externally. Data do not go through the framer
and will be looped back before generating payload.
Description
Using the loopback command, you can configure a loopback mode for the CE3
interface. Using the undo loopback command, you can disable loopback on the CE3
interface.
By default, loopback is disabled on the CE3 interface.
Interface Management
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