This forum includes tips for maintaining the best audio quality possible with the Ooma System. If your Ooma system is having issues with dropped calls, static audio or echo, look here for assistance.
#71512 by ecdallas01
Sat Dec 25, 2010 7:29 pm
I installed Ooma telo in May, 2010 and I have been happy with it. My set up is DSL modem -> router -> ooma telo -> phone. Starting 5 days ago, my calls (regardless incoming or outgoing) can only last approximately 1 minute. After roughly 1 minute, my outbound voice path always gets cut off - I can hear them but they cannot hear me. It is very annoying especially trying to stay in touch with freinds and family during holiday season. Any suggestion on what the problem is and what I can do to fix it?

My DSL speed is: downward: 4.99M and upward: 674K
#71520 by thunderbird
Sun Dec 26, 2010 3:59 am
There has been a rash of these kind of problems lately.

This is most likely a firewall closed or malfunctioning port problem (Routing Problem), somewhere in the circuits from your Ooma device, to the legacy carrier, and back to your Ooma device.

First: Make sure your telephone isn't defective. Try a spare phone.

Second: If your Ooma device is placed behind (LAN side of) your router, create a rule(S) to open the following ports in your router.
Service Ports:
Ooma uses the following application ports for outbound data and voice traffic:
UDP 53, UDP 123, UDP 514, UDP 1194,UDP 3386, UDP 3480, UDP 10000-20000, TCP 53 and TCP 443.

Third, If that doesn't work:
Call customer service and report your "I/They can't hear them/me" (Routing) problems. Customer service has been very helpful with this problem lately.
#72789 by Airborne
Wed Jan 12, 2011 5:27 am
POSTED FROM Thunderbird:
Service Ports:
Ooma uses the following application ports for outbound data and voice traffic:
UDP 53, UDP 123, UDP 514, UDP 1194,UDP 3386, UDP 3480, UDP 10000-20000, TCP 53 and TCP 443.

DO NOT TAKE MY WORD FOR IT: Do your own research. "Be Safe, Be Secure"
The information that was posted is a breach in basic Web Security: Please "DO NOT" open these ports on your router UNLESS you understand what they are for!!! Out of the ones listed, most general/intermediate users only need 53 and 443. Any port above 1023 is called a registered port. Typically they have a specific role that corporations normally use. RE: Syslog is used as a logging port, Open VPN is a specific port used for remote access, etc.....

FYI: The web page below states the initial intent of these ports: http://www.iana.org/assignments/port-numbers

53=DNS
123=NTP
443=http protocol over TLS/SSL
514=syslog
1194=open vpn
3386=GPRS SIG
3480=Secure Virtual Workspace
10000-20000= too many vulnerabilities to list
#72792 by thunderbird
Wed Jan 12, 2011 6:10 am
See Ooma Troubleshooting Full Article at: http://ooma.custhelp.com/app/answers/detail/a_id/104

Ooma Troubleshooting Article: |

Advanced Connections and Service Ports

Article:
This article contains additional advanced configuration information regarding the network connections associated with the Ooma system. A small minority of users will find this information useful for a special network setup.

Service Ports
Ooma uses the following application ports for outbound data and voice traffic:
UDP 53, UDP 123, UDP 514, UDP 1194,UDP 3386, UDP 3480, UDP 10000-20000, TCP 53 and TCP 443.

This port information can be useful if you have a special network configuration with a firewall device upstream of the Ooma Hub or Telo that restricts application ports on the inside or "private side" of your network for outbound traffic. Firewalls are typically on by default for inbound traffic and no special modifications are required to allow that traffic through.

If you are installing the Ooma Hub or Telo for the first time and find the line 1 and line 2 buttons are illuminated, you may have a firewall on your router or modem preventing certain Ooma traffic from going through as shown in the example diagram below: see http://ooma.custhelp.com/app/answers/detail/a_id/104

To verify you are running into this problem, connect a computer to the "HOME NETWORK" port of the Ooma device. Using this computer, verify you can reach http://setup.ooma.com in a web browser. Next, try browsing to a public website (such as http://www.google.com or http://www.yahoo.com). If the web connection to the public website is successful, you may have a firewall blocking Ooma's service ports and will need to configure firewall policies to allow Ooma's data and voice ports. For more information on configuring firewall policies, please refer to your modem/router user manual.
#73057 by Lyndon
Sun Jan 16, 2011 7:01 pm
I switched back to Comcast with the Motorola Surfboard 5120 modem after using DSL for the past year.

I am having exactly these problems.

Have not turned off my DSL, so I guess I have to switch back to call Ooma. What a Catch-22.
#73074 by ntoy
Mon Jan 17, 2011 9:17 am
Hello ecdallas01 & Lyndon,

Can you provide approximate date on when this started happening?
On ALL Inbound & outbound calls?
Certain area codes?
Remote hears fine?
You hear silence?
Can you provide some call examples: please include date,time, specify inbound or outbound number, exact symptom heard on each end & send me a personal message with the information.

Thanks

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