SpectraLink 72-1084-02 manual Troubleshooting Wireless Telephone Problems, Access Point Problems

11. Troubleshooting Wireless Telephone Problems

Wireless Telephones can exhibit transmission problems in several ways. They can cease functioning properly, display error messages, or display incorrect data. When using and troubleshooting Wireless Telephones, consider the following problem sources to determine the best method of approaching any specific situation.

11.1 Access Point Problems

Most, but not all, Wireless Telephone audio problems have to do with access point range, positioning and capacity. Performing a Site Survey as described in Section 9.2 can isolate the AP causing these types of problems. If the Wireless Telephone itself is suspected, conduct a parallel Site Survey with a Wireless Telephone that is known to be properly functioning.

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 Telephone 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 AP may be filled. If this happens, the user will hear three chirps from the Wireless Telephone. The user can wait until another user terminates a call, or move within range of another AP 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 AP. Due to range limitations, this may be the same as moving out of range.

Transmission Obstructions – prior to system installation, the best location for APs 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 APs.

11.2 Configuration Problems

Certain problems are associated with improper configuration of either the supported Mitel Networks VoIP solution or the Wireless Telephone.

Configuration problems are generally corrected by changing the configuration at the supported Mitel Networks VoIP solution or on the Wireless Telephone. There may also be incorrect programming of the AP. See the Configuration Note for the AP in use at the site.