3600 Series Wireless IP Phone Installation
3600 Series IP Phone Installation Page 54
IP Office 4.0 15-601082 Issue 05a (22nd May 2007)
4.2.1 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 YY XXX2 YY
XXX3 YY XXX4 YY
-dBm
• 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 YY XXX2 YY
XXX3 YY XXX4 YY
Chnl
• 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.
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