Lucent (AT&T) ISDN Telephones:
8510T ISDN Telephone Set

• 10 Call Appearances / Features keys
• 9 Fixed Feature buttons
• 4 Feature Control keys
• 4 Soft keys
• Local Directory (30)
• Call ID
• Call Log (10 Outgoing; 10 Incoming; 10 Unanswered)
• Speakerphone
• Display 2 x 4
• Compatible with CENTREX
• Available as “Voice Only” or “Voice and Data”
• Available in 5ESS Custom or National Protocol
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• Available in 5ESS Custom or National Protocol
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8528T ISDN Telephone Set
• 4 Feature Control keys
• 4 Soft keys
• Local Directory (30)
• Call ID
• Call Log (10 Outgoing; 10 Incoming; 10 Unanswered)
• Speakerphone
• Display 2 x 4
• Compatible with CENTRE
• Available as “Voice Only” or “Voice and Data”
• Available in 5ESS Custom or National Protocol
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8520TAD ISDN Telephone Set
• 20 Call Appearances / Feature keys• 9 Fixed Feature buttons
• 4 Feature Control keys
• 10 Soft keys
• Local Directory (144)
• Call ID
• Call Log (20 Outgoing; 20 Incoming; 20 Unanswered)
• Speakerphone
• Display 7 x 24
• Compatible with CENTREX
• Available as “Voice and Data”
• Available in 5ESS Custom or National Protocol
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