For internal name display (IP phone to IP phone) you need to modify calling name display on the agent line. Go to the DN on the agent phone and scroll down to the bottom.
There are several moving parts when presenting calling party name to the PSTN. In addition to configuring the line settings.
1. You have to make sure your PSTN trunks are provisioned to allow name display. further, you want to check and see if the trunks are provisioned to only present a generic company name (e.g. "Acme, Inc.") IOW, the carrier substitutes what you present with the generic name.
2. You gateway must be provisioned to present calling name
3. There are several parameters in cucm that can influence this behavior as well
I am a little confused. I am assuming your agent phone is a Cisco IP phone leveraging UCCX and that you are trying to call another non-agent Cisco IP phone. If this is the case, then you wouldn't be using a route pattern but a translation pattern.
On the agent phone line/extension, go to the configuration section that says "Line on Device SEPyyyyyyyyyyyy". Modify the Display (Internal Caller ID) and ASCII Display to the name you want to present.
Go to the translation pattern and check to see if you are restricting calling name presentation. This parameter is located under "Calling Party Transformations" and is called "Calling Name Presentation". This is usually set to Default, which should work. You can set it to Allow to test.
While I don't think calling name display is affected by this parameter, you could also check device configurations of the target (destination) phone to see if "Ignore Presentation Indicators (internal calls only)" is checked. It shouldn't be by default, if it is test your calls by unchecking this option.
I have reviewed the "Display (Internal Caller ID)" on the device, the "Calling Name Presentation" on the route pattern and the "Ignore Presentation Indicators (internal calls only)" in the device profile is unchecked.
I test calling from a device whit masked CSS to another internal IP Phone and it doesn't show the caller name. It is showing the masked number as a caller number but does'n show the caller name.
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