D&R has a range of Telephone Hybrids to choose from.

 

Telephone Hybrid-1 mk2 60898509

Telephone Hybrid-2 60898511

GSM Telephone Hybrid 60898520

Smartrig-2 Field GSM AUDIO Interface 10250541

9.5" Blank panel 10100013

Mounting Kit for 9.5 inch Rack front panels 60898582

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