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will not be recovered until the fault disappears at remote site.
2． The equipment will monitor the status of remote E1 interface. When it changes to
loss of signal status from normal, we take is as a link fault of remote E1 link. At the
mean time, the equipment will cut off the transmission of local E1 interface but not
send AIS signal. The local E1 interface will not recover until the fault disappears at
remote site.
3． The equipment will monitor the status of optical link, either transmitting alarm or
receiving alarm will be taken as an optical link fault. At the mean time, the Ethernet
interface status will change to link down and the E1 interface will be cut off. The
Ethernet interface and E1 interface will not recover until the optical interface
recovers.
The fault-pass-through capability is designed for users who have particular
requirements. When it is disabled, any fault at remote site and at optical interface has
nothing to do with local interfaces; all the interfaces of local module will be open.
In order to avoid misunderstanding, users are advised to use it cautiously. The factory
default status is disabled.
4.2.3. E1 Remote Loop-back Test
Interface
BERT
Circuit
E1 interface
"E1 remote loop-back" setup at local Ethernet Multiplexer
Note: when setup any kinds of loop-back at the local Ethernet Multiplexer, the "remote
loop-back" switch at remote Ethernet Multiplexer must be at default status.
When the module is at E1 remote loop-back status, the Ethernet data communication will
not be interfered.
4.2.4. How to Implement Remote Network Management
When the equipment is connected as the following topology, the remote network
management can be implemented.
Multiplex
Core
Local site
Multiplex
Fiber-optic
Core
8
Raisecom Technology Co., Ltd
Interface
Circuit
E1 interface
Remote site
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