Related Clues:

• Cast starter
• Graph lead-in
• Phony prefix?
• Graph starter
• Cast or conference starter
• Prefix for conference
• Scope or cast starter
• Conference starter
• Start to communicate?
• Phone or market preceder
• Intro to marketing?
• Prefix with ''play'' or ''scope''
• The 'T' of TV
• The T in TV
• Path opening