32(42)
Datum/Date
Rev
Dokumentnr/Documentnr
Uppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved
Kontr/Checked
Tillhör/Referens-File/Reference
1999-07-15
F
1545-ASB 150 02 Uen
FAULT TRACING DESCRIPTION
Faktaansvarig - Subject responsible
3
Procedures
3.1
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.
If there is a voice communication problem also check the connection of the telephone handset to the tel-
ephone and test using another handset if the original handset is suspected to be faulty.
3.2
Check RASC connection
When encountering communication failures to RASC verify proper settings for the V.24-port and the pro-
grammable parameters for the built-in modem and corresponding parameters for RASC on the PC. For
more information consult document EN/LZB BS 103 1197 RASC Uen, "RASC".
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
C,*,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
