Remote Extension S (Video) – Cisco 9971 IP Phone User Guide 
Version 2.0                                               © WTT HK Limited 2017 
 
7.2  Change The IP Phone PIN 
 
1.  Visit WTT Cloud Voice S User Portal at  
https://adp.wtt-cloudvoice.com/pc/en/index.jsp 
2.  Enter your Cloud Voice S Number and Cloud Voice S Password 
3.  Click Login 
4.  Click here in the foot note of the Call Management page 
5.  Enter your Cloud Voice S Number and Cloud Voice S Password 
6.  Click Login 
7.  Click User Option and choose User Setting 
8.  Enter Current PIN 
9.  Enter New PIN and Confirm PIN 
10. Click Save 
 
Note: 
i.  Starter IP Phone PIN is your Cloud Voice S Number 
ii.  New IP Phone PIN will be applied to the following services 
-  Personal Directory 
-  Extension Mobility