I have a VTECH CS6649 phone and OBI110. GV works fine, call comes in, answering machine picks up, leave a message, all is good. However, if someone calls via the landline, the answering machine answers yet the person on the other end does not hear it, just silence. I tested this out using a cell phone and calling the landline. Phone rings then nothing, just silent yet the connection does not drop. Found that it is actually recording. So it is like a one way communication. I bypassed the OBI and hooked the phone directly into the landline and it worked fine so definitely having an issue when the OBI is connected. I've been telling people to use the GV number but nooooo, they keep using the landline and I keep hearing about how it doesn't work...Blah! So, any help would be appreciated. Thanks.