(Psychological / emotional perspective)
When we are aware of the telephone number we are ringing, it may be the numbers that are important. We also may be aware of the need to contact a specific person who we can help, or who can help us.
If we are searching for a telephone number we are having difficulty in co-ordinating our thoughts about our future actions. Using the telephone suggests a direct one-to-one relationship.
The type of phone will also have relevance; an old-fashioned one suggests ancient ideas or concepts.
A modern up-to-date digital or mobile phone indicates we are easily able to make ourselves understood in various situations.