3.6.8
1.
2.
3.6.9
1.
3.6.10
3.6.11
Music-on-Hold:
2.
3.
4.
3.6.12
1.
Check HT option connector strapping on ETSB-A or ETSB-B board.
l-2 for internally generated hold music
2-3 for external
source
If an external music source is used, check the source at the SDF and its connection to the
main equipment. If the music is not heard at the 61 1 socket then liability for repair lies with
the customer.
Change ETSB board.
Change ELNB board.
Exclusive Hold:
Follow maintenance flow charts.
3.6.13
Automatic Ring Back:
3.6.14
Last Number Redial:
2.
3.6.15
1.
3.6.16
1.
2.
3.6.17
1.
2.
3.6.18
1.
2.
Privacy:
Check A-pair wiring to station C (does it short circuit with other stations?).
Change the associated ESTB board.
Add-on:
Check that stations Band C are functioning properly by using the station test.
Hold:
Change station B.
Check the system programming data for the automatic ring back time out.
If line is behind PABX, check the type of exchange line and trunk access code
programming.
Replace station A.
Abbreviated Dialling:
Replace station.
Abbreviated Dialling:
If line is behind PABX, check that the pause is operated correctly.
Check that the correct ECMB board has been installed.
SYSTEM
ECMB BOARDS
616
ECMB-D
1236
ECMB-B
2260
ECMB-A
Access Barring No Access to a Group of Exchange Lines:
Check the programming.
Check that stations are wired correctly (i.e. Cabled with the right station number).
Access Barring by Digit Analysis:
Check the programming. Check station allocation to class and data needed for barring.
Check that the digits programmed agree with the sales form.
175
ISSUE 1