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5.2 Site Survey
Doing a Site Survey Using a 3616/3620/3626 Phone
1.
With the wireless phone powered off, simultaneously press and hold Power On/Start Call and Power Off/End
Call.
2.
After hearing two beeps, release Power On/Start Call, then release Power Off/End Call.
3.
If an admin password has been set, it must be entered to display the Admin menu. If no password is set, the Admin
menu is displayed.
4.
Scroll to and select Diagnostics.
5.
Select Run Site Survey.
6.
Walk the entire coverage area while viewing the display.
7.
Numbers racing across the wireless phone display indicate access point information is being obtained. A Waiting
message indicates the system is not configured properly and the wireless phone cannot find any access points.
8.
The FCN key toggles between the three coverage modes described below.
·
Detect dBm Coverage
Press FCN to display -dBm on the base of the display. The phone is now showing the signal strength of the top
four access points it can contact.
XXX1 through XXX4 are the last four digits of the MAC addresses of the access points. The primary access
·
point, the access point which had the strongest signal to this wireless phone, is displayed first, followed by
the next three access points in order of signal strength.
YY is the power level in dBm at which this wireless phone heard the associated access point. Although
·
shown as a positive number, YY represents negative dBm and lower numbers represent stronger signals.
For example, a displayed value of 40 indicates -40dBm, and is therefore a stronger signal then a display of
50 (which indicates –50dBm). At least one access point's reading should be stronger than -70 dBm in all
areas.
Note any areas that have inadequate dBm readings. Coverage issues are best resolved by adding and/or
·
relocating access points.
Detect Overlaps and Conflicts
·
Press FCN to display Chnl on the base of the display. The phone is now showing the channel that each access
point is using. Ideally each access point should be using a unique channel. It is preferable that no overlaps exist
anywhere in your facility. If that is not possible, then any location that shares two access points with the same
channel should also show at least two access points with stronger signals that do not conflict.
XXX1 through XXX4 are the last four digits of the access points' MAC address.
·
ZZ is the channel number that the access point is using.
·
Note any areas that have access points that are in contention for the same channel. Overlap issues may be
·
resolved by re-assigning channels to the access points or by relocating the access points.
3600 Installation
IP Office
XXX1 YY XXX2 YY
XXX3 YY XXX4 YY
-dBm
XXX1 YY XXX2 YY
XXX3 YY XXX4 YY
Chnl
Certifying the Installation: Site Certification
15-601082 Issue 05b (23 September 2008)
Page 61
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