How to obtain all Contacts on Phone number?

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Hi Experts,

I am trying count of Unique Contacts who match a phone number. For eg: Assume that Contact A has phone_office = <ph_num>, Contact B has phone_home = <ph_num> and Contact C has phone_mobile = <ph_num>. So 3 contacts has same phone number but different Phone types.

So, when I run a ROQL - I get 1,1,1,0 but expected result is 3. Here is my ROQL: SELECT Count(Contact.ID) FROM Contact WHERE (Phones.Number = '<ph_num>') and Phones.PhoneType IN (1,2,3,4).

This is for CTI to match a Contact against a Phone number, I know this can be done by reports by unfortunately infrastructure of CTI vendor doesn't allow the query of report again as Customer is already into IVR and querying info might delay loading time of Workspace for Agent.