BusinessPhone Communication Platform 7.0
Fault Tracing

## Procedures

### Check on telephone

The digital system telephones have a built-in self test facility that can be initiated by pressing three keys simultaneously for three seconds. Self test can only be initiated in idle state. Initiate self test and verify that the telephone functions properly. If not replace the telephone.

Telephone type | Keys for initiation of self test | Result of self test ok
DBC 199 | R-button, * and 4 | LED glows steadily
DBC 201 | C,*,4 for one second | All LEDs light up
DBC 202 | C,*,4 for one second | ’Self test ok’ on display
DBC 203 | C,*,4 for one second | ’Self test ok’ on display
DBC 211 | C,*,4 for one second | All LEDs light up
DBC 212 | C,*,4 for one second | ’Self test ok’ on display
DBC 213 | C,*,4 for one second | ’Self test ok’ on display
DBC 214 | ans/ext,*,4 for one second | ’Self test ok’ on display
DBC 220 | C,*,4 for one second | All LEDs light up
DBC 222 | C,*,4 for one second | ’Self test ok’ on display
DBC 223 | C,*,4 for one second | ’Self test ok’ on display
DBC 224 | ans/ext,*,4 for one second | ’Self test ok’ on display
DBC 601 | Transfer, * and 4 | No LEDs shall flash
DBC 632 | Transfer, * and 4 | ’Self test ok’ on display
DBC 662 | Transfer, * and 4 | ’Self test ok’ on display
DBC 663 | Bypass, * and 4 | ’Self test ok’ on display

If there is a voice communication problem also check the connection of the telephone handset to the telephone and test using another handset if the original handset is suspected to be faulty.

### Check BMS connection

When encountering communication failures to BMS verify proper settings for the V.24-port and the programmable parameters for the built-in modem .

### Check CSM connection

The Cordless System Manager software (needed only if BusinessPhone is equipped with an IC-CU board) installed on a PC requires a connection to the maintenance port on the Cordless System Central Unit (IC-CU_) or to the CPU-D4, either to the maintenance port or via modem. Off-line menus include functions that do not require this connection. Go to the directory in which the Cordless System software has been installed9ply started-up the welcome menu is displayed.

If there is no communication with the Cordless System the message ’No connection with DCT1800. Start Off-line program? Y (Yes/No)’ is displayed. By pressing the <Enter> key the Off-line program is started. If you want the connection with the Cordless System you must now check the connection between the PC and the Cordless System and then select N(o). If communication has not been established yet, the following message ’Waiting for DCT1800 response...’ is displayed. If there is still no communication with the DCT1800 system the message ’No connection with DCT1800. Do you wish to continue? (Yes/No)’ is displayed.

When the communication is established the message ’Loading data from DCT1800, please wait...’ is displayed.

If the Cordless System has been initialized before with a version of the Cordless System Manager older than revision R6, the message ’WARNING: SPU-S parameters not initialized yet. <Enter>’ is displayed. If so, do not forget to execute the ’Restore country data’ command.

### Check on service display DT 288, DT 290, DT 292, DT 368, DT 570, DT 590

The portable can be switched to service display mode (type DT 310 does not support this function) displaying information regarding the radio interface like BS number, carrier, time slot number, RSSI etc.

When the service display is active, calls cannot be made and incoming calls will terminate the service display mode. To make this display visible while calling, first setup the call and then, via the `R(inquiry)' menu, access the service display menu.

Note

Activating the service display reduces the normal functioning of the portable. It is therefore recommended only to use this facility in exceptional cases, e.g. when service requires such.

#### Activating Service Display Mode DT 368 (GAP-protocol)

1. Switch off portable
2. Switch on portable with special code:
   (Press the 3 keys simultaneously for more than 1 second).

- A ‘LinkInfo’ menu can then be accessed via the Info - DCA Service menu. This menu cannot be accessed after a normal switch-on.

1. Access Info - DCA Service menu.
2. Access Linkinfo menu.

Note

It is also possible to access the DCA Service menu when the phone is ‘off-hook’ ie during a call.

The DCA-Service menu has two options available to display different types of information.

##### Link Info

The link info menu has two display options which can be selected by pressing either up or down. The following display is entered by pressing up:

The following display is entered by pressing down:

The Link Info option can be used for site surveys and commissioning of the system. All information regarding the traffic/beacon channel to which the portable is locked, is visible. The signal strength theoretically varies between /00 and /3F. In practice, values will lie between /07 and /37, of which /07 means noise, /37 means optimum quality. Typical values are /20 .. /29.

#### Activating Service Display Mode DT 288 (GAP-protocol)

1. Switch portable ON
2. Press:
3. Press:
   one after the other.
4. Press:
5. Here you will find LinkInfo, FPInfo, RFPInfo, HWIdent , SWIdent, Loggings (OperateTime, ErrorNumber), TestDisplay, DisableDev (deactivates DevServices).

The LinkInfo display shows::

#### Activating Service Display Mode DT 290/292 (GAP-protocol)

1. Switch portable ON
2. Press:
3. Press:
   one after the other
4. Press:
5. Here you will find LinkInfo, FPInfo, RFPInfo, HWIdent , SWIdent, Loggings (OperateTime, ErrorNumber, NumPowerUps.,WDTimeouts, SWExit, FirstDate), DeviceTest (TestDisplay, TestVibrator, TestBuzzer, TestEarpiece), Disable (deactivates DevServices).

The LinkInfo display shows::

#### Activating Service Display Mode DT 570 (GAP-protocol)

1. Switch off portable
2. Switch on portable with special code:
   (Press the 3 keys simultaneously for more than 1 second).

- A Service menu can then be accessed via the Info menu. This menu cannot be accessed after a normal switch-on.

1. Press:

Note

It is also possible to access the Service menu when the phone is ‘off-hook’ ie during a call.

The Service menu has various options available to display different types of information.

##### Link Info

The link info menu has 4 display options which can be selected by pressing either up or down.

The Link Info option can be used for site surveys and commissioning of the system. All information regarding the traffic/beacon channel to which the portable is locked, is visible. The signal strength theoretically varies between /00 and /3F. In practice, values will lie between /07 and /37, of which /07 means noise, /37 means optimum quality. Typical values are /20 .. /29.

PARI identifies the FixedPart (= entire cordless part of BusinessPhone = IC-CU2)
Manic and Modic are not relevant for BusinessPhone

##### RFP Info

The RadioFixedPart info menu shows al list of all Rfps, which are processed in the database of the portabe.

##### FP Info

The FP (fixed part = entire cordless part of BusinessPhone = IC-CU2) menu shows info about all visible FPs.

##### SST

The SST (Site Survey Tool) menu has 3 display options (Handovers - ON/OFF, LevelBeep - ON/OFF, ErrorBeep - ON/OFF) which can be selected by pressing either up or down.

##### User Log

The User Log menu has 2 display options (Operating - shows operation hours, Date - shows the date of the installation) which can be selected by pressing either up or down.

##### Repair

The Repair menu has 3 test options (Buzzer, Earpiece, Display) which can be selected by pressing either up or down.

#### Activating Service Display Mode DT 590 (GAP-protocol)

1. Switch portable ON
2. Press
3. Navigate with to ’Call Info’:
4. Navigate with to menu item ’Call time’:
5. Press:
6. Use and the key pad:
   one after the other
7. You get Dev. Services:
8. Press:
9. Here you will find LinkInfo, FPInfo, RFPInfo, Show IPEI, SWIdent, HWIdent, Resubscribe, Loggings (OperateTime, ErrorNumber, NumPowerUps.,WDTimeouts, SWExit, FirstDate), DeviceTest (TestDisplay, TestVibrator, TestBuzzer, TestEarpiece), Disable mode (deactivates DevServices), Default prg.

The LinkInfo display shows:

- C: Carrier (A..J)
- S: TimeSlot number (0..9,A, B)
- Rp: Base Station number (Fixed Part)
- Ss: Signal strength (RSSI)
- Qu: Quality of the signal (RQI)
- T: Link type (0 = beacon, 4 = traffic)

### Check on configuration data for trunks

When checking configuration data for trunks verify the following:

- That the selected line signalling diagram agrees with the public network for the relevant trunk and the country specific session is loaded.
- That the country specific session is loaded.
- This can vary depending on the type of public exchange which type of trunk is connected.
- Signalling to public exchange; decadic, DTMF, MFC/MFE or ISDN.
- Supervision times.

### Voltage measurements

System voltages can be read out by using the BMS tool (tree view - select maintenance A/D-converters). As it is possible to cause a short on the lines during measurement all boards in the cabinet should be removed.

### Check on power supply

Check the secondary voltage of the transformer(~36VAC), generally power supply (48VDC) and battery charger regarding connection to mains and functioning fuses. Check (if installed) the battery condition of the power back-up. Replace (if any) faulty units. The voltages (see drawing below) can be verified on the backplane. As there is always the risk of short circuits these measurements should be done when all boards have been removed.

### System reset

There are several conditions needing a restart of the PBX. In this case there are two ways of restarting the system:

- Switch off the power supply either by disconnecting from mains (unplug, switch off the supply lines) or switch off the exchange using the switch at the bottom of the cabinet.
- Make a short between the two pins CPU-D4: A32 and C32; CPU-D5: A16 and C16 on the connector 2 at the front. Be careful when shorting these two pins by using a plug with a wired connection or a jumper.

### Check on line network

Checks on the line network can vary in scope depending on the configuration of the line network and type of connection. See the following schematic diagram and use the exclusion method by testing in the order stated.

### Check on programmable parameters for facilities

For facilities and various connection cases there exist a number of programmable parameters that need to be programmed correctly for the facility to function. See "Facilities" in BMS.

In addition there is a traffic group matrix that states the authorisation for different connection cases. The traffic group matrix can be used to verify connection paths, e.g. A may call B but B may not call A.

### Check on resources

Free and utilised resources are specified in the BMS-menu Maintenance-system-resources. Here are stated the number of free PCM-channels, number of free references on VMU, etc. Only the number of free PCM-channels and free references on the VMU-board are of interest. Other information is used only during system testing in conjunction with new development. With the help of the stated information it is possible to determine whether the PBX possesses sufficient capacity.

### Translation and verification of revision states

Ericsson identifies all products by means of a product number and revision state.

An ASB 150 02 exchange is built-up from several sub-products, each with its product number and revision state. By using the BMS -(tree view - Maintenance- CPU-Software ) it is possible to read the product number and revision state of the central program's PROM-set (LZY), PROM (RYS).

Via the BMS (tree view - Boards - Hardware details) it is possible to read out the product number and revision state of printed circuit board positions. The revision state cannot be read directly it can only be determined with the help of the information in columns PCB and HW code.

- PCB contains a digit that indicates the R-state of the PBA's printed circuit board.
- HW code contains a digit that can be related to a modification of the PBA that took place subsequent to the manufacture of the PBA.

In the service advices is stated, for each board's (product number) revision state, the applicable PROM-set (RYS), HW-code and PCB-code.

Note

There also exist prerequisites stipulating which revision states for which products may be combined.

Revision: K © Ericsson Enterprise 2005