I have the same problem reported in this thread. Here is my email trail with Obihai Support Team. I am sorry that in the end I still do not have a resolution.
Me
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We have the following two problems
a) Many times we can hear the other party but they cannot hear us. I have tried to restart the Obi100 by pulling the power and putting it back it in.I have tried to restart with ***9 and then 1 to reboot. But the issue still exists
b) Many times there is lot of crackling in the sound we hear.
I have set up Google Voice on SP1 and
Voip.ms on SP2.
Thanks in advance but let me know whether you need any other information
Obihai Support Team
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Do the remote end not hearing you at all or do they hear you choppy ?
What is your internet link ? DSL / Cable / Satellite ?
What is your upload/download bandwidth ?
Try to set/configure QoS on your router.
Set it to give highest priority for OBi, and give "upload badwidth" to 100Kbps.
Google Voice requires usage of 100Kbps bandwidth, so this amount needs to be "reserved" for OBi.
Typically the QoS setting is for what ip address of the device.
Reboot your router after you change this setting, to make sure that it is remembered.
For QoS configuration, please look at your router's manual. Here is an example for Linksys router model:
http://www.voipmechanic.com/setting-qos-voip-linksys.htmMe
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Thank you very much for your prompt answer.
I have a DSL connection with 6MBPS download and 500kbps upload. It has been working ok till around last month. We have started having this problem recently. When I searched on internet, I saw the following thread and seems lot of people have reported the same issue
http://www.obitalk.com/forum/index.php?topic=1316.0 Obihai Support Team
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Configure your router to allow outgoing packets on UDP port 19305.
You can also try to put OBi's IP address in your router's DMZ.
Me
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I have added UDP port 19305 to the list of ports to be forwarded to the Obi100. I had already added 5060, 5061 and 16000 - 16991. I will see how it goes.
Thank you very much for the answer.
Me
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I added the ports, as shown in the picture below. (192.168.1.2 is the Obi100 device). Still no luck. It is always the other party that is not able to hear us. This is only on some calls, There are calls where both parties can hear well.
<picture> DD-WRT --> NAT/QOS --> Port Range Forwarding page </picture>
Next I am going to add the Obi100 to the DMZ and see whether that works. Thanks for your answer.
I want to bother you with another issue I have. The line is choppy sometimes. I am guessing that this happens if the internet bandwidth is in use by other applications like NetFlix. I wanted to confirm that this can be resolved either by increasing the bandwidth - a higher MBPS or QOS. My current bandwidth is 6 MBPS down and 500 KBPS up DSL conection.
Obihai Support Team
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Our instruction in
http://www.obihai.com/FAQ.html#ports-to-keep-open-on-my-router
is to allow outgoing packets on these ports.
Not port forwarding them to OBi (incoming)
For choppy audio, set QoS for your router.
Give OBi highest priority and bandwidth amount of 100KbosMe
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Well opening the ports and port forwarding aren't they the same? When a request comes from internet to Obi100 on port 19305, the port forwarding allows access to that port on Obi100, which in other words means that that port is open.
I am trying to place the Obi100 on DMZ for few days. I will know whether that works
Thanks for your answer.
Me
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I have put the Obi100 in DMZ. So no port is blocked. I am still having the problem of other person not able to hear from my phone. I reset the Obi100 to factory defaults and just set up Google Voice. I still have the problem.
I have been using Obi100 since early last year from the time Obi100 came out and I have been using the same router since then. I have not had this problem till sometime last month. And when I visited Obihai facebook page, I find that an update was pushed out. Is it possible for me to roll back to the firmware prior to that? I never had this issue at that time.
Thanks
Obihai Support Team
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You need to allow outgoing packets on udp port 19305.
When you do "Port Forwarding", that is incoming packets.
You can leave OBi in the DMZ.
The current firmware that you have, 2711, is good. There is no reason to downgrade.
Me
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Thanks for your mail. I have done the things you suggested. I am still having the same problem of other party not able to hear anything at all. Is there anything else that I can try? I am afraid right now I have hit a wall and it seems like I have try some other product. It has been working well till last month. Thanks for your time.