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TN2501AP Voice Announcements over LAN (VAL)
TN2602AP IP Media Resource 320 (700261928, 203071)
TN2793 24-Port Analog Circuit Pack
TN2793B 24-Port Analog Circuit Pack
TN420C - TN744E
TN429D DIOD (Direct Inward Outward Dialing)
TN464D Universal DS1/ISDN Circuit Pack
TN464F Universal DS1 / ISDN PRI Interface
TN464GP Universal DS1/PRI Interface (108826884)
TN556B ISDN-BRI 4-Wire Interface
TN556D ISDN-BRI 4-Wire S/T-NT Interface (12-Ports)
TN570B Expansion Interface
TN570C Expansion Interface
TN570D Expansion Interface
TN742 8-Port Analog Line Circuit Pack
TN744C Call Classifier
TN744D Call Classifier
TN746 16-Port Analog Circuit Pack
TN746B - TN768
TN746B 16-Port Analog Circuit Pack
TN747B 8-Port Central Office Trunk Circuit Card
TN748C Tone Detector
TN748D Tone Detector
TN750B Announcement Circuit Pack
TN750C Announcement Circuit Pack
TN753 Direct Inward Dial Trunk Circuit Card
TN753B Direct Inward Dialing Trunk
TN754 4-Wire DCP Digital Line Circuit Pack
TN754B 4-Wire DCP Digital Line Circuit Pack
TN754C 4-Wire DCP Digital Line Circuit Pack
TN756 Tone Detector
TN760C Tie Trunk
TN762B Hybrid Line Circuit Card
TN763C Auxiliary Trunk
TN763D Auxiliary Trunk
TN765 Processor Interface
TN767E DS1 / ISDN PRI Interface Circuit Pack
TN768 Tone Clock
TN771 - TN1656
TN771D Maintenance Test Card
TN771DP Maintenance and Test
TN772 Duplication Interface
TN775C EPN Maintenance Board
TN775D EPN Maintenance Board
TN776 Expansion Interface (for R6 or earlier si)
TN777 Network Controller
TN777B Network Controller (R6 and earlier)
TN778 Packet Control (R6 and earlier)
TN786B Processor
TN790 Processor (R6 and earlier)

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