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Adtran 1200105L3

Adtran TSU Dual E and M/TO Module - TSU Dual E & M-TO Module (Provides two voice ports operating in 2-or 4-wire E & M Type I-Type II-Type V or Transmit Only modes. 2713 Hz loopback capable.)
Brand Adtran
Model -

The Adtran 1200105L3 is also known as ADN-1200105L3 .