User's Manual

Page 41 of 49
Safe Mode and Firmware Upgrade
Problem
Possible Root Cause
Solution
Unable to enter
safe mode.
Terminal
continues to start
in normal mode.
Incorrect steps for
button pressing
Ensure the ‘Exit Pointing Mode’ button is
pressed and held.
Press and hold ‘Power’ button for 3 seconds.
Release ‘Exit Pointing Mode’ button and
‘Power’ button.
Firmware
Upgrade Failure
Incorrect upgrade
package/file is
selected.
Ensure that correct firmware upgrade
package is used.
Wi-Fi connection is
lost.
Ensure the Wi-Fi connection is stable.
Perform firmware upgrade after restarting
iSavi
TM
terminal.
Interruption on power
supply.
Ensure that there is no interruption of power
supply during firmware upgrade. Retry
firmware upgrade.
Voice call
Problem
Possible Root Cause
Solution
Unable to make
outgoing call
Wrong contact
number.
Make sure that a correct number format is
dialed including full international prefix.
No access rights for
outgoing calls.
Make sure the device used for VoIP calls is
given the correct access rights for outgoing
call functionality.
Not enough credit for
prepaid SIM.
Wrong SIP client
If you have a prepay subscription, check your
prepay balance to ensure you have sufficient
credit to make a call.
SIP calls on the iSavi
TM
are only supported
with the IsatHub Voice app available on App
Store and Google Play for Macintosh and
Android devices respectively.
Call Barring is
activated.
If the phone has sufficient signal strength and
cannot make or receive calls, check if Call
barring has been activated in call settings.
Unable to receive
incoming call
No access rights for
incoming call.
Make sure that the user account is given the
access right for receiving call.
Wrong SIP client SIP calls on the iSavi
TM
are only supported
with the IsatHub Voice app available on App
Store and Google Play for Macintosh and
Android devices respectively
Call Barring is
activated.
If the phone has sufficient signal strength and
cannot make or receive calls, check if call
barring has been activated in call setting.