Further information
Aastra 5370/Aastra 5370ip
127
eud-1281/1.3 – R3.0 – 04.2013
Troubleshooting
This section contains a few tips on how to operate your phone if you encounter
any problems.
Malfunctions
Your call partner cannot hear you or you cannot hear your call partner
Make sure the handset cord is correctly plugged into both the handset and the phone (see chapter
"Installation and first-time operation"
, page
114
).
Handset off-hook, no dialling tone, no display
Make sure the phone cord is correctly plugged in to both the phone and the LAN socket (see chapter
"Installation and first-time operation"
, page
114
).
Display shows "Not configured", handset off-hook, no dial tone
Your phone has not been assigned a call number. Contact your system administrator for more informa-
tion.
The display reads: "Trying to register"
The telephone cannot be registered. Contact your system administrator for more information.
Display is working, but connection is not possible
Your phone may be locked. Unlock your phone (see chapter
"Unlocking your phone"
, page
60
).
Freely configurable keys cannot be configured
The configuration may be locked. Unlock your phone (see chapter
"Unlocking your phone"
, page
60
).
The key for a reconfiguration may be locked in the system. Contact your system administrator for more
information.
The expansion key module Aastra M530/Aastra M535 possibly has not sufficient power supply. Contact
your system administrator for more information.
Insufficient display contrast
The setting for the display contrast is inadequate. Change the setting (see chapter
"Setting the display"
,
page
85
).
Impaired sound quality during hands-free operation
The sound quality can be affected if the volume is too loud – turn down the volume. If the sound quality
fluctuates, contact your system administrator.
Only emergency calls are possible
You may want to telephone from a Free Seating phone, but have not logged on to it. Log on to the
phone (see Chapter
"Free seating"
, page
72
).
Phone calls can be made, but no names are displayed; the key configuration is missing, and the
phone does not respond to function commands
Restricted mode following a software update without update licence.
Note:
For all other messages, faults and questions you may have, contact your system administrator.
