Troubleshooting
Try to use the following table try to define the cause of a problem and solve the error.
Problem
No sound
Does not answer
Device answers calls but does not record
Buzzing or other interference on loudspeaker
UK
Appendix
Possible cause
Volume set to zero.
OGM 2 (OGM only) is activated.
Interference from cordless telephones,
54
Remedy/Recommendation
Volume adjustment .
Check all cables and plugs.
Activate OGM 1
Change installation location.