WIT-400HE Installation Manual
Date: 15/M
ar/2012
This Document Contains proprietary information and may not be reproduced or copied without express
Written permission of a duly authorized representative of Ericsson-LG Co.Ltd.
32
7.
QoS Checklist
After you finish the installation of the system and AP, please check the voice quality by the
following items. If you find any problem on the following list, you can improve QoS by the trouble
shooting guide of each case.
No. Check
list
Trouble
shooting
guide
1
Can you make 8 calls at the same time
without voice break? (The AP should
guarantee 8 calls simultaneously)
- Review the cell planning
- Check the channel of the adjacent APs. It should be
separated more than 5 channels between adjacent
APs.
- If the AP is not in the recommended list, please
compare with the recommended one.
- If the above solution doesn’t improve the voice
quality, please change codec type to G.729 in system
admin.
2
Can you make long time call with good
voice condition?
- Review the cell planning
- Check the channel of the adjacent APs. It should be
separated more than 5 channels between adjacent
APs.
3
Can you talk across the roaming area?
(WIT-400HE guarantees roaming time
less than 500ms in well designed WLAN
network.)
- Review the cell planning. The adjacent cell is
overlapped enough?
- Check the AP support seamless roaming. We don’t
guarantee if it’s not the recommended one.
4
Can you talk without voice break moving
in the office?
- Review the cell planning. The APs cover all the area
that you are moving?
.- Check the AP connected with the phone.
5
Can you talk comfortable with the outside
subscriber?
- Check the trunk status of the system.
- If volume is too low, you can adjust gain in the
system admin.