BusinessPhone Communication Platform 4.0
Installation Instruction ASB 150 02 > Boards For ASB 150 02

## MFU (ROF 157 5132/_)

#### The ISDN PART

##### DIP-switches position 154 to 157

Switch 1 selects the termination on the send side. Switch 2 selects the termination on the receiver side. Switches 3 and 4 enable remote power feeding to the connected ISDN terminals. Switches 1...4 should be set to ON if the link is set as S-interface .

Note

At the end of each line a termination resistor must be installed (e.g. in the last wall outlet).

##### Switch position 42

When selecting S- or T-interfaces start by setting the T-interfaces using switches 4, 3, 2 and 1 in consecutive order then set the S-interfaces starting with switches 1, 2, 3 and 4.

#### Settings and ranges on the T-/S-interface

Refer to BTU-B2 (ROF 157 5121/_)

#### The VMU PART

The VMU functionality and the (4) registers are available if the Compact Flash Card is inserted.

For installation and configuration refer to the stipulations in document Start Of Operation (1537-ASB 150 02Uen).

Note

The VMU will not start up without the internal directories created on the Compact Flash Card.
The unlock key (file named DISK.ULK) must be valid on the compact flash card.

The MFU board can use only flash cards supplied by ERICSSON. These flash cards are delivered with a control file called DISK.ULK containing a licence key. This file must not be opened by any tool as this would destroy the file and thus disable the compact flash card. This will cause an error condition indicated by slow flashing yellow and green extension LEDs.

#### Limitations

Only four MFU boards may be mounted per system. MFU board(s) can be mixed with VMU-HD board(s) but if a MFU board is installed, no VMU-D board may be installed in the system.

If a MFU board is installed without compact flash card, the complete VMU part is marked inactive. If later on the MFU will be upgraded with a compact flash card, then this can not be done by using the hot swapping feature, due to different card types. The MFU without flash card has to be removed completely from the system (from HW and SW point of view ) and then the MFU with flash card can be included in the system. The prevoius programming of the card, has to be done again.

#### The ELU-D3 PART

The DBC 213 and DBC 214 instruments are not supported with 4 key panels, only 2 key panels per instrument are allowed to be connected.

Revision: A © Ericsson Enterprise 2003