Specifications

Managing Mobility Managing Enterprise Locations
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ShoreTel Mobility Router Administration Guide 113
8. (Optional) To modify default handover settings for this floor, click the Settings tab.
9. In the Min Wi-Fi to Cellular Roam RSSI field, type the minimum Wi-Fi received signal strength
indication (RSSI) threshold below which a call is handed over from Wi-Fi to cellular.
This value represents the minimum threshold for weak coverage areas in the network. It can be
used as a backup if a Route Point is missed or for areas that have weak coverage but do not yet
have a Route Point specified.
The default value is -80. The recommended value is between -75 and -85.
10. In the Min Cellular to Wi-Fi Roam RSSI field, type the minimum Wi-Fi RSSI threshold that must
be available for a call to be handed over from cellular to Wi-Fi. The default value is -65.
This value applies only in cases where the handover is not triggered by a Route Point. This value
should represent an RSSI that is typically available only within the building so handover to Wi-Fi
does not occur outside. This value is also used as a backup for handing over to Wi-Fi if the user
misses connecting with a Route Point when entering the building.
If a Route Point is present, the handover is triggered based on the Route Point specific settings,
even if they are different than the Min Cellular to Wi-Fi Roam RSSI value.
11. In the Min Voice RSSI field, type the minimum RSSI threshold for incoming and outgoing voice
calls.
This value represents the minimum RSSI allowed for initiating a voice call. If this value is not met
or exceeded, then Wi-Fi is not available.
The default value is -72. The recommended value is between -67 and -75.
12. In the Max Packet Loss% field, type the maximum average percentage of voice packet loss
allowed before the call is handed over to cellular. The default value is 15%. If average packet loss
exceeds this value, the call is handed over to the cellular network if the cellular network is
available. Changing the values in these fields overrides the values set in the Default Settings
menu. For more information, see “Establishing Default Mobility Settings” on page 100.
13. The applicable Codecs display in the table. Use the Up or Down buttons to select the highest
priority codec supported by both ends. Move the codecs into their appropriately ranked order for
usage, the top codec being the highest priority. To modify the packet duration of a codec:
1. Select the codec from the table.
2. Click Modify.
3. Modify the packet duration.
4. Click Apply to save changes and return to the main screen.
14. To save your changes, click Apply.
Tip
If the strongest access point at a Route Point is less than or equal to the value specified in the Min Wi-
Fi to Cellular Roam RSSI field, a Route Point might not be needed.