Specifications

1.10

Using The

Auxiliary Board

and Add-On

Cards

The auxiliary board is an all-purpose “mother board” that

accommodates up to four smaller option cards. You can install two

auxiliary boards in the DXP, but you can only install them in the

Universal

Auxiliary slots of the main cabinet. The option

car&

include the DTMF Tone card, DXOPT-TON, the communications

card, DXOPT-COM, and the

sync. card, DXOPT-SYN. These

cards mount onto the auxiliary board, much like the RAM and

software cards mount onto the CPU board.

While you can install a station, line, conference, or auxiliary board

into either universal

auxiliary slot (first two slots next to the CPU

board), we recommend that you try to leave at least one of these slots

for an auxiliary board, even if you don’t need an auxiliary board now,

you may want to expand the system later. Remember, these are the

only two slots in the entire system that will accept an auxiliary board.

Use the line slots and universal slots for line and station boards before

you use a universal

auxiliary slot.

DTMF Tone Card

The DTMF tone card expands the

DXP’s

industry-standard dialing

capability: without a tone card, only two industry-standard telephones

can dial out of the DXP simultaneously. Each DXOPT-TON card

provides four more IST dialing paths. So if you are going to have

several IST telephones, it’s a good idea to install a tone card to make

sure that more than two of them can dial-out simultaneously. You can

install four tone cards on each auxiliary board (see

lMI89-078,

IST

Installation Instructions, for more information).

14 Introducing The DXP