SIP User's Manual  52  Document #: LTRT-12804 
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¾  To save configuration changes on a page to the device's volatile memory 
(RAM): 
  Click the Submit 
 button, which is located near the bottom of the page in which 
you are working; modifications to parameters with on-the-fly capabilities are 
immediately applied to the device and take effect; other parameters (displayed on the 
page with the lightning 
 symbol) are not changeable on-the-fly and require a device 
reset (see ''Resetting the Device'' on page 334) bef
ore taking effect. 
 
 
Notes:  
•  Parameters saved to the volatile memory (by clicking Submit), revert to 
their previous settings after a hardware or software reset (or if the device 
is powered down). Therefore, to ensure parameter changes (whether on-
the-fly or not) are retained, you need to save ('burn') them to the device's 
non-volatile memory, i.e., flash (see ''Saving Configuration'' on page 
336). 
•  If you modify a parameter value and then attempt to navigate away from 
the page without clicking Submit, a message box appears notifying you 
of this. Click Yes to save your modifications or No to ignore them. 
 
If you enter an invalid parameter value (e.g., not in the range of permitted values) and then 
click  Submit, a message box appears notifying you of the invalid value. In addition, the 
parameter value reverts to its previous value and is highlighted in red, as shown in the 
figure below: 
Figure  3-10: Value Reverts to Previous Valid Value 
 
 
3.1.6.4  Entering Phone Numbers 
Phone numbers or prefixes that you need to configure throughout the Web interface must 
be entered only as digits without any other characters. For example, if you wish to enter the 
phone number 555-1212, it must be entered as 5551212 without the hyphen (-). If the 
hyphen is entered, the entry is invalid.