Possible Clues:

• 1980 Blondie hit
• Phone line?
• Al Green album
• ''Here's my phone number''
• Words mouthed while holding an imaginary phone to one's ear
• Blondie's biggest hit
• ''Here's my telephone number''
• Parting words
• Parting words for Blondie?
• Theme song from 'American Gigolo'