Avaya 3641 - Access Point Installation

3600 Series Wireless IP Phone Installation
3600 Series IP Phone Installation Page 18
IP Office 4.0 15-601082 Issue 05a (22nd May 2007)
1.3 Access Point Installation
Installation of the wireless network access points will be largely dependant on the manufacturers
instructions. That will include instructions on the location of access points in order to ensure sufficient
wireless coverage in the required areas of usage.
1.  Perform a Site Survey
Do not proceed with AVPP and 3600 Series phone installation unless a through site survey has
been performed. Perform a site survey following the instructions provided by the access point
manufacturer. Most wireless phone audio problems have to do with access point range,
positioning and capacity. Performing a site survey can isolate the access point causing these
types of problems. If the wireless phone itself is suspected, conduct a parallel site survey with a
wireless phone that is known to be properly functioning.
Potential Problems
The following are the most common problems encountered which would be revealed by a thorough site
survey.
• In Range/Out of Range
Service will be disrupted if a user moves outside the area covered by the wireless LAN access
points. Service is restored if the user moves back within range. If a call drops because a user
moves out of range, the wireless phone will recover the call if the user moves back into range
within a few seconds.
• Capacity
In areas of heavy use, the call capacity of a particular access point may be filled. If this happens,
the user will hear three chirps from the wireless phone. The user can wait until another user
terminates a call, or move within range of another access point and try the call again. If a user is
on a call and moves into an area where capacity is full, the system attempts to find another
access point. Due to range limitations, this may be the same as moving out of range.
• Transmission Obstructions
Prior to system installation, the best location for access points for optimum transmission
coverage was determined. However, small pockets of obstruction may still be present, or
obstructions may be introduced into the facility after system installation. This loss of service can
be restored by moving out of the obstructed area, or by adding access points.
Performing Site Surveys Using 3600 Series Phones
The 3600 Series phones can be put into a site survey mode. For details see section 4.2 Site Survey
with chapter 4. Certifying the Installation.