Synway Information Engineering Co., Ltd
Terminal
Local
Terminal
Receive End
non-grounded
grounded
non-grounded
grounded
short-circuited
disconnected
short-circuited disconnected
Transmit End
PC
grounded
disconnected disconnected
short-circuited short-circuited
Receive End
Transmit End
short-circuited
short-circuited
short-circuited
manage to
make the PC
grounded
PC not
grounded
short-circuited
short-circuited
disconnected
Receive End
Table 2-4 Configuration of Grounding Jumpers for Use of 75
Ω
E1 Unbalanced Coaxial Cable
Step2: Properly fit the required mainboard and outlet board into the Synway
intelligent switch.
Insert the mainboard and outlet board into a pair of vacant slots on the Synway intelligent
switch.
With the mainboard completely inserted, push the upper and bottom handles inwards at the
same time until a ‘click’ sound is heard. The board is now properly fitted. It can be further
fastened with screws on the handle for extended use and prevention of accidental removal.
Insert the outlet board properly into the slot on the back of switch which corresponds to the
mainboard. Push it home and then fasten the corresponding rear panel by two screws (on
the upside and underside of the rear panel).
Notes:
①
It is necessary to push the board home into the slot until it can go no further, and
ensure that it is not inclined at an angle before applying lever action on the handles to
secure it. Such problems as poor contact of boards, blue lamp always on which implies
the board abnormality, or damages on connecting parts of the PBX may be caused if:
(I) Handles are used too early
(II) Handles are used while the board is inclined
(III) Force on handles is not applied evenly.
②
Board is allowed to be inserted when the computer is at power on. However, as
strong static electricity may lead to damages, the operator should touch a grounded
conductor to discharge the static electricity on him before inserting the board.
Step3: Connect the outlet board to digital trunks.
Among these four models of outlet boards illustrated in
Figure 2-11
, RSD043 provides L9
connectors especially for users to connect with L9 coaxial line; RSD081 and RSD041
provide common RJ48C connectors to support direct connections to other boards, the pin
Special-for-Switch TEJ Digital Trunk Interface Boards Hardware Manual
(Ver 1.0) Page 13
