Quote from: jxzz on May 14, 2012, 09:07:19 AM
Google voice phone number rings both obi100 line 1 and line2, in theory if line1 is connected, line2 callcentric account should be silent doing nothing.
In my previous testing with an OBi100, I didn't have Google Voice (which is configured on SP1) also ringing my Callcentric DID (which is configured on SP2). After doing so, however, I still don't experience anything unexpected.
You need to be aware of what occurs with this particular configuration (confirmed by Ethernet monitoring):
1. An incoming call to your Google Voice number will generate a call directly to your OBi (SP1) and a call to your Callcentric DID.
2. The call directly to your OBi (SP1) will very likely be received first (although this is not guaranteed) and the PHONE Port will start ringing.
3. The call to your Callcentric DID will result in Callcentric trying to ring your OBi via SP2. (This call is very delayed in my case. It's not clear whether this is a problem with Google Voice or Callcentric.)
4. The OBi will immediately report BUSY to Callcentric because it can't accept a second call (CallWaiting) while the PHONE Port is ringing.
5. Callcentric voicemail answers the call, resulting in Google Voice canceling the call directly to your OBi (SP1). The caller hears Callcentric's voicemail.
There's also potential for 'race' conditions in this scenario. For example:
1. You answer the call directly to your OBi (SP1) call just before the SIP INVITE from Callcentric arrives, resulting in the OBi producing a CallWaiting indication. Google Voice cancels the call to your Callcentric DID, which should cause Callcentric to abandon the call to your OBi via SP2, but this might take several seconds to propagate through the PSTN system.
2. You don't answer the call directly to your OBi (SP1). Depending on how delayed the call from Google Voice to your Callcentric DID is, Google Voice voicemail instead of Callcentric voicemail may take the call.
I haven't come up with an explanation as to why any of this might confuse Callcentric's voicemail system, especially since it doesn't appear to occur here. Plus I see the OBi responding to Callcentric just as it should.
You might want to use Wireshark to monitor what's occurring in your situation to lay to rest whether the fault is with the OBi or Callcentric.