Samsung 4TRM KPOS71BTRM/XAR Loop Trunk Interface Module (Refurbished)Key Features: Mfr. Part #: KPOS71BTRM XAR Contains 4 loop start C. O. lines interface circuits with C. O. disconnect supervision The 4TRM can be inserted in any of the three slots on the UNI card Compatibility: OS7100 OS7200 S Condition: Refurbished
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