3Com VCX v7111 User Manual page 114

To configure the Phone-Context tables, take these 6 steps:
Open the 'Phone Context Table' screen (Protocol Management menu > Manipulation
1
Tables submenu > Phone Context Table option); the 'Phone Context Table' screen
appears, as shown below.
Phone Context Table Screen
Figure 35
Open the 'Phone Context Table' screen (Protocol Management menu > Manipulation
2
Tables submenu > Phone Context Table option); the 'Phone Context Table' screen
appears, as shown below.
From the Add Phone Context As Prefix drop-down list, select Enable to add the received
3
Phone-Context parameter as a prefix to outgoing ISDN SETUP Called and Calling
numbers, if necessary.
From the Phone Context Index drop-down list, select the index number.
4
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3Com VCX V7111 VoIP Gateway User Guide