SHDSL.EVB.4CH User Manual
Revision: 1.0.0, 2019-02-05
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additional information about software, SHDSL firmware version and SHDSL configuration will
be
printed to serial interfaces (UART and USB) if the button “ERASE” is pressed.
Please see Figure 4 for the location of the buttons.
3.9.2
DIP switches
There is a protective tab on top of DIP switch. Please remove it from the DIP switch before first
use. The dual in-line package switch S604 is used for selection of operation mode. If the switch
position is stable for more than four seconds the software will accept the new setting and
reconfigure the SHDSL chipset.
There are five switches available. Table 8 describes the function of the DIP switch called
“MODE”.
Table 8
: Function of “MODE” Switch S604
Switch
number
Description
Switch function
1
Device Mode
On: STU-C (Master, CO mode)
Off: STU-R (Slave, CPE mode)
2
Extended Rates
On: Enables extended bitrates (64...15336kbps)
Off: ITU-T standard bitrates (192...5696kbps)
3
User Interface Mode On: CLI is active (only with SW Packages P3)
Off: BSI is active
4
Line using (LU1)
The number of used SHDSL lines will be defined
LU2
LU1
Number of SHDSL lines
0
0
4 lines (1-4) (normal mode)
0
1
3 lines (1, 2 and 4)
1
0
2 lines (1 and 4)
1
1
1 line (1)
5
Line using (LU2)
SHDSL is a point to point connection. SHDSL interconnections need two different device
modes, called SHDSL Termination Unit Central Office (STU-C) and SHDSL Termination Unit
Remote (STU-R). Switch 1 is usable for device mode selection. Please ensure to switch one
modem to STU-C and the other to STU-R. Otherwise no data transmission will be established.
Beside the standard data rates according to ITU-T G.991.2 [3] Intel
®
SHDSL Chipset provides
higher (and lower) data rates. Intel
®
SHDSL Chipset is capable to use about three times higher
transmission speed compared to high speed standard SHDSL connections. The lower bitrates,
for example, match better to ISDN-BRI. Switch 2 selects full performance or compatibility to
other SHDSL equipment. For SHDSL systems with Intel
®
SHDSL Chipset on both sides Intel
®
recommend using the extended bitrates (switch 2 on). For highest interoperability let switch 2
off.
If more than one SHDSL line will be used the data rate settings will be set to all lines. It therefor
follows that the data rate will be a multiple of number of lines and data rate.
Example:
configured data rate:
192 Kbps
number of SHDSL lines:
two
complete data rate:
2 x 192 Kbps = 384 Kbps
Note: The test mode configuration via switch number 4 and 5 like at the SHDSL.EVB.1CH is
not supported with SHDSL.EVB.4CH. This configuration can be done by the CLI (chapter 5.3).
