How does an administrator make a Cisco IP phone display the last 10 digits of the calling number when the call is in the connected state, and also display the calling number in the E.164 format within call history on the phone?
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A. B. C. D.D.
To make a Cisco IP phone display the last 10 digits of the calling number in the connected state and also display the calling number in the E.164 format within call history on the phone, the administrator needs to configure a calling party transformation pattern that keeps only the last 10 digits.
Option A, configuring a translation pattern that has a Calling Party Transform Mask of XXXXXXXXXX, will only mask the calling party number with "XXXXXXXXXX," and will not display the last 10 digits.
Option B, changing the Significant Digits on the inbound SIP trunk to 10, will also not display the last 10 digits in the connected state. Significant Digits only specifies how many digits of the called number to send out.
Option C, changing the service parameter Apply Transformations On Remote Number to True, will apply transformations to the remote number and not the calling party number.
Therefore, option D is the correct choice. The administrator needs to configure a calling party transformation pattern that keeps only the last 10 digits. The steps to do this are as follows:
After configuring the calling party transformation pattern, the administrator should associate it with the relevant device or device pool. Once applied, the Cisco IP phone will display the last 10 digits of the calling number in the connected state, and also display the calling number in the E.164 format within call history on the phone.