Vanguard Managed Solutions Vanguard 342 - Manual (Page 45)

Hardware Description 2-5
Motherboard
Access the
Motherboard To access the motherboard components you must remove the motherboard from the
enclosure.
For information about removing and installing the motherboard refer to the
“Accessing the Motherboard” section in Chapter 3.
For information about removing or installing motherboard components, refer to the
“Modifying Your Vanguard 342” section in Chapter 3.
Daughtercards The Vanguard 342 can support two optional daughtercards. These daughtercards are
described in the “Vanguard Daughtercards” section on page 2-7.
Note
If you are only using one ISDN or enhanced ISDN BRI daughtercard, the card
must be located in the Port 1 position. If you are using Release 6.3 and greater,
the enhanced ISDN BRI ST data daughtercard must be located in port 1 and the
ISDN BRI voice card would go in port 2. For more information refer to Chapter
Five of the Daughtercard Installation Guide (Part Number T0020).
Serial Interface The Vanguard 342 supports a serial interface that is installed on the motherboard.
The serial interface can be configured to function as a Digital Interface Module
allowing the support of these interfaces on Port 3 only:
• V.24
• V.35
• V.36
• V.11/X.21
For information on configuring the serial interface, refer to the “Cabling the
Vanguard 342” section in Chapter 3.
The serial interface supports only DCE. It can accommodate DTE with the use of a
crossover adapter cable. For information on cabling for DTE capability, refer to the
“Cabling the Vanguard 342” section in Chapter 3.
SIMMs and DIMM The motherboard has three slots:
• SDRAM: This connector takes a standard DIMM.
• FLASH: This connector takes a FLASH SIMM to support alternate bank
FLASH options.
• Data Compression/Encryption: Set on its side, this connector takes a SIMM to
provide data compression and encryption capabilities.
Caution
To avoid damaging the equipment, be sure to place the SDRAM DIMM, and the
FLASH, and Data Compression/Encryption SIMMs in the correct slot.
For information on installing or removing these components, refer to the “Adding
and Removing Memory Modules” section in Chapter 3.