QUICK START CONFIGURATION
21
76-02-059A
4.10 E3/DS-3 Port Configuration
The MetroLAN supports up to 3 E3/DS-3 ports operating simultaneously. Each E3/DS-3 port
is configured independently. Dependant upon the payload mode configured for the SDH
port, E3/DS-3 may not be available:
The E3/DS-3 ports are presented as 75ohm BNC connector pairs on the rear panel of the
MetroLAN. Note, that the ports may be labelled as 1 to 3 on the rear panel but are referenced
as J to L in the user interface.
There are three parameters which must be set for every application and to get the basic
system up and running. The remaining parameters may be configured but in most cases
may be left as default.
4 . 10. 1 State
In order to configure the E3/DS-3 port it must first be placed in the DOWN state. Once
configuration is completed the state must be changed to UP before normal operation will
commence.
4 . 10. 2 Interface
The port operating mode must be selected to be either E3 or DS-3. This selection is on a
per port basis. In each case the E3/DS-3 circuit is asynchronously mapped into a VC-3
tributary.
4 . 10. 3 Allocation
The E3/DS-3 port must be allocated to a single VC-3 tributary within the STM-1 frame. The
allocation is entered in the range 1 to 3.
4.11 Optional E1/T1 Configuration Parameters
The following parameters are not generally necessary to get the basic system up and
running, however their configuration may improve manageability or increase reliability.
4 . 11. 1 TX Line Build Out
When DS-3 is selected the line build option is available to vary the transmit power. In most
case the DS-3 end station will be located close to the MetroLAN and thus the default settings
will be fine. However, if there is a long cable run to the end station then the Line Build Out
may need to be changed to reflect the actual deployed equipment.
Payload Type
E3/DS-3 Supported
AU-4/VC-4
No
AU-4/TUG-3/VC-3
Yes
AU-4/TUG-3/VC-12
No
Содержание MetroLAN-1000
Страница 28: ...FAULT FINDING 76 02 059A 24 ...
