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Page 118 of 206
Wireless handset scenarios
Changing the master WLAN IP Telephony Manager 2245
Viewing software version
For the WLAN IP Telephony Manager 2245
553-3001-304
Standard 3.00
Administration and maintenance
When a WLAN IP Telephony Manager 2245 is removed from the system, the
removal is detected within two seconds. Wireless handsets not in calls are
immediately forced to check out and check in again.
For wireless handsets on active calls, two possible scenarios can occur.:
•
If the removed WLAN IP Telephony Manager 2245 was providing the
"gateway" function for the wireless handset, then the call is lost and the
wireless handset is forced to check in again.
•
If the removed WLAN IP Telephony Manager 2245 was providing the
"timing" function for the call, the call switches to the WLAN IP
Telephony Manager 2245 that should now provide the "timing" function.
Note: During the two seconds while the loss of the WLAN IP Telephony
Manager 2245 is being detected, the audio for the call is lost.
If the master WLAN IP Telephony Manager 2245 loses communication with
the network, the wireless telephone system fails. All WLAN IP Telephony
Managers 2245 lock. All calls are lost and no calls can be placed.
Therefore, if the master WLAN IP Telephony Manager 2245 must be
replaced, ensure the system can be shut down with minimal call interruption.
Reset all WLAN IP Telephony Managers 2245 after the master has been
replaced. If the IP address of the master WLAN IP Telephony Manager 2245
is changed, the new IP address must be re-configured in all WLAN IP
Telephony Managers 2245 using that master.
To view the software versions for the WLAN IP Telephony Manager 2245,
follow the steps in Procedure 16 on
September 2004
page
119.
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Troubleshooting
