I am struggling with receiving faxes through my Hub. Sending faxes is fine. However, I am unable to have my Hub pick-up any incoming faxes. I do not want to get a dedicated line as my fax needs are fairly small. I have a HPJ4580, which has a Phone Line 1 jack and EXT jack on the back. Cany anyone help me with the setup?
Check the following:
If the line that you are using for Faxing, is set to go to Ooma voicemail, with the number of Ooma voice mail rings set to a less number of rings (Say 3), than than the number of rings the fax machine is set to pickup (Say 4). The Ooma device will always pickup first. Check it out in My Ooma and your Fax settings.
Check to see if call blocking enabled in My Ooma.
If your fax machine is picking up, voicemail wouldn't be kicking in because fax machine picking up would be same as someone picking up the phone.KGun1284 wrote:Still doesn't work. I have the number of rings setup for Ooma voicemail at 5, and the number of rings setup to pick-up a fax at 2. What's happening is that the fax is coming in, but no handshake. After 5 rings, voicemail just records the fax tones. I tried checking and unchecking block anonymous calls. There has to be a solution somewhere as I had it working at one point. I used to have a problem where when I would pick-up a voice call, the fax machine would interpret the call as an incoming fax approximately 30 seconds into the conversation. But that doesn't happen anymore. Help!!
Factors That Influence Success or Failure of VOIP Faxing
The best tip I can offer is to reduce your fax transmission speed to 9600 bps to maximize VoIP fax success rates. The faster one tries to send a fax, the more likely it is to fail on a VoIP connection. That's because more fax data is jammed into each transmission second while the digital on/off signaling rate remains constant. More data gets lost as faxing speed increases, until data loss exceeds the intelligible threshold and the receiving fax device aborts the transmission, effectively saying, "I don't get it, try again."
Also, turn off Error Correction mode on both fax sending and receiving machines, if it is on. VoIP has a fairy high signal noise level due to jittery instabilities in the connection. This causes many false positives for "errors" when Error Correction is enabled, which can abort a transmission unnecessarily.
Use a VoIP service provider that supports the T.38 protocol; just ask or check the service's detailed specifications online. T.38 was developed specifically to improve the success rate and quality of faxes transmitted over VoIP. Note that it just improves, it doesn't perfect.
I suggest there is something about your Ooma and its configuration that doesn't understand it is to let the fax setup tones out between rings. So your fax machine never knows it is to answer.
My Ooma Hub came with a 2-line splitter. Perhaps that is what you are using? Perhaps the Ooma is smart enough to originate a call from either "line" no matter whether or not you have the 2nd line enabled. But if it is a 2-line splitter then the "fax" line will never ring. I suggest you plug the fax directly into the Ooma and then your handset into the jack provided on the fax machine. If that works, then leave it. Or go to the store and buy a splitter rather than use the special one Ooma provides.