Matrix Telecom Varta AMP100, User Manual

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MATRIX VARTA AMP100 User Guide 193
Q. I have an active call (displayed in the middle of the Call screen known as the Active Call Area
17
) and a held call/
waiting incoming call. When I access handover, the held call/waiting incoming call remains in the application. Why?
A. Handover is possible only for the active call (displayed in the middle of the Call screen known as the Active Call
Area). Any held call or waiting incoming call will remain in the application.
Q. I have made the Handover request (Wi-Fi to Cellular Handover) and then hold the call. Now, I do not receive the
Handover call. Why?
A. After making Handover request, if you access any feature or make a new call, Handover request is terminated
by the Server. You will not receive the Handover call. For further details about Call Handover, refer the topic
“Handover” .
Q. I do not find the iLBC codec within Cellular Audio Codecs or Wi-Fi Audio Codecs as mentioned in the User
Guide. What has gone wrong?
A. iLBC codec is supported only on armv7 based devices. If your device does not have armv7 architecture, then
iLBC codec will not be displayed in the Codec Selection list.
Q. After making changes for Audio Codecs (Cellular or Wi-Fi), calls are not routing through VARTA AMP100. What
has gone wrong?
A. It is recommended not to change the default settings of Audio Codecs without consulting your system
administrator. Depending on the server, availability of Audio Codecs is liable to change and calls may fail if required
codec is not configured. Consult your system administrator for details.
Q. As I outdial a number using VARTA AMP100 when it is not registered, the call is routed using my Native cellular
application. How is it possible?
A. It occurs as Call through Native option is turned ON in the Call Settings . Go to Application Settings > Call
Settings and turn OFF this option. See “Call Settings” for details.
Q. I can't get proper video of remote user or remote user does not get proper video. What can I do?
A. Several reasons are possible, a few are mentioned below:
• Check whether you have sufficient network bandwidth required by the selected Video Codec, at both ends.
• Check whether you have proper network connectivity between you and the remote user.
• It may be possible that MTU size of video packet is different. Verify whether the remote application
supports any programmable option to set Tx and Rx MTU Size. If it supports, then program it as given
below:
•
Rx MTU Size >=1300
• Tx MTU Size <=1500
17. For more information about the Active Call Area, refer “Call Screen Functionality” .