Does anyone know if the dx120 co card has strap settings if so how are these made and do they increase line volume?
When I increase it on the telephone set it has a lot of echo through the handset

Short Line and Long Line -
closed/open transmit/receive default
open/closed higher transmit/receive
open/open transmit default/ higher receive
closed/closed higher transmit/ default receive.
Don't think it will help. The early 120 sets were very very poor in audio department.

Is'nt that for the dx80?, I've never looked or seen any straps for the DX120. :shrug: :shrug:

this is a new system all new phones are these straps easily visabale and marked?
I cant seem to find any documentation in the manual