I have observed that I can not find phone book entries, if a special character is included - in this case it is a parenthesis "(".
So I expect this to be a bug - either it should be prohibited to enter special characters or the search result should include these entries.
If someone has another solution, I would be thankful.
Thanks for reporting this issue. It is a known one and has been already reported to our developer.
Bug ID: SAP-3879
Our development has implemented a fix for this issue which is included in the available current release.
Can you please test it and let me know if the problem is fixed?
Best Regards/Mit freundlichen Grüßen
snom support team