Basic operations of the NEC telephone switch

Enter http: // 192.168.1.1 in the browser, log on to the telephone switch with the admin account, and go to the System Data menu. The following settings are displayed:
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1. Set and change the extension number
1. Open 11-XX: System Numbering Plan and enter 11-02: Extension Numbering. You can see the Extension number and the switch port number of the Extension. You can directly modify the Extension number here.
Note: there cannot be two extension numbers with the same number. After modification, click Apply.
 
2. Rule for dividing the port of the extension in the vswitch: www.2cto.com

Ii. Extension permission settings
1. Enable the 21-04 option, set the extension call permission based on the open Mode, and click Apply.
2. Permission level description: www.2cto.com

Permission levels international long distance 1 domestic long distance 2 city calls 3 Inner Line 4 generation group settings
Open the 23-02 option and you will see the setting screen of the connected Group. You only need to set the "Call Pichup Group" Number of the same connected Group to the same one, and then Apply.
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Source http://michael8.blog.51cto.com/307258/1064531