The OBi110, as with most ATAs, comes configured for the US. For those of us on the other side of the pond, in the UK, it’s always a challenge to get ATAs to work. Here are the required settings for the OBi110 in the UK. They’ve been acquired collectively from a few sources but have been proven to work for inbound and outbound calls. Anything not mentioned should be left with the Default checkbox ticked.
Physical Interfaces -> PHONE Port:
- Impedance: 370+(620||310 nF)
- CallerIDMethod: FSK(V.23)
- CallerIDTrigger: After Polarity Reversal
- HookFlashTimeMin: 150
Physical Interfaces -> LINE Port:
- RingDelay: 0 (don’t worry, caller ID still works if it’s enabled on your line)
- RingProfile: B (the default B profile seems to work well in the UK)
- CPCTimeThreshold: 90
- DetectPolarityReversal: Unticked
- SilenceTimeThreshold: 30
- DisconnectTonePattern: 400-30;2
- ACImpedance: 370+(620||310 nF)
- OnHookSpeed: 3 ms (ETSI)
- CurrentLimitingEnable: Ticked
- CallerIDDetectMethod: FSK(V.23)
- RingFrequencyMin: 10
- RingThreshold: 13.50-16.50
- RingIndicationDelayTime: 0
- RingTimeout: 128
Tone Settings -> Tone Profile A:
- Dial Tone: 350-18,440-18;20
- Ringback Tone: 400-18,450-18;20;(.4+.2,.4+2)
- Busy Tone: 400-18;20;(.375+.375)
- Reorder Tone: 400-18;20