LineKey Label length on T46G

[lrvbanned]

Hi.
I want to set the Line Key labels with the associated DID on a T46G, for example:
LineKey1 Label = 3051234567
LineKey2 Label = 3052221111
LineKey3 Label = 3054561234

Problem is, the label length on screen is very short and the phone number gets truncated on the screen like "305...".

I searched the documentation and found "features.config_dsskey_length" but that for DSS so it looks like it does not apply to LineKeys.

So, how can I extended the Line Key label length?

Thanks!

PS. Great phone BTW! My first time trying it and I'm amazed