Viking Electronics Use Loop Start Devices on Ground Start Trunks
List Price: $292.50
Price: $183.41
You Save: $109.09 (37%)
Product Details
Model GLS-12 is designed to allow up to 12 standard telephone sets, multi-line key systems or other loop start equipment to be connected to and operate on two-wire ground start CO trunk lines. The GLS-12 provides the CO ground start line with the signalling required to draw dial tone when the loop start equipment goes off-hook. Incoming calls are not affected by the GLS-12 and ring directly to the loop start devices.
  • Allows PABX and key systems configured for loop start trunks, as well as standard tele phones to be connected to C.O. ground start trunks
  • Eliminates wiring ground start buttons in standard telephones


  • 12 circuit automatic ground start to loop start equipment converter
  • Stackable to increase capacity
  • Easy, straight forward installation via an RJ-21X 25 pair connector


  • Power: The unit is powered by the 48V ground start C.O. trunk lines - no AC power supply required
  • Dimensions: 133mm x 89mm x 44mm (5.25” x 3.5” x 1.75”)
  • Shipping Weight: 1.13 kg (2.5 lbs)
  • Environmental: 0°C to 32°C (32°F to 90°F) with 5% to 95% non-condensing humidity
  • Connections: (1) RJ-21X