COM AT+CPBF: Find phonebook entries 
COM Version History:
COM Version 1.0   23-05-2005   T. Kleinmann	started due to CR 170
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COM Create test phone book entry
AT+CPBW = 50,'01708158364',129,'Test'
WAIT FOR OK

AT+CPBF=?
WAITFOR (1,'+CPBF:')

AT+CPBF='Test'
WAITFOR (1,'01708158364')