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Joined: Mar 2010
Posts: 2
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Member
Joined: Mar 2010
Posts: 2 |
We have an OS7030 behind our firewall and it is connected to SIP provider.
Following ports have been opened at the firewall:
5060
35060
30000 - 30100
We can make an outgoing calls through SIP with no problems at all. But when we got an incoming call through SIP we can't hear other side, but they can hear us perfectly.
OS software version is 4.40
Any help will be appreciated.
Thank you in advance.
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Joined: Jul 2009
Posts: 157
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Joined: Jul 2009
Posts: 157 |
Cheers, Dave. Eco Communications Selling and installing Ericsson BP150/50/250 from 1996 to 2005 Samsung selling and installing since 2000 Toshiba selling and installing since 2004 Microsoft NT and SQL certified (10 years ago...)
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Joined: Mar 2010
Posts: 2
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Member
Joined: Mar 2010
Posts: 2 |
Still no luck. The biggest issue that from time to time we can hear each other perfectly (I have to say maybe 2 calls from 10). So it seems like not the network/firewall issue. 
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Joined: Jun 2006
Posts: 3,004 Likes: 4
Moderator-Samsung
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Moderator-Samsung
Joined: Jun 2006
Posts: 3,004 Likes: 4 |
What handsets are you using?
Forward the MPS ports or disable it
Are you running private with public?
Disable SIP ALG in the router since you have the ports forwarded manually
I recently had a similar issue where the caller could hear fine, but we couldn't hear them, turned out to be DOS (denial of service) option in the router was causing the issue, disabled it and all was fine.
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Joined: Feb 2008
Posts: 326
Member
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Joined: Feb 2008
Posts: 326 |
Still no luck.
The biggest issue that from time to time we can hear each other perfectly (I have to say maybe 2 calls from 10).
So it seems like not the network/firewall issue. We can make an outgoing calls through SIP with no problems at all. But when we got an incoming call through SIP we can't hear other side, but they can hear us perfectly. In my experience, if it has worked perfectly - you have it set up correctly, so its probably not a ksu issue, leaving the possibilities to a. internal network traffic, router/firewall traffic speed and load, internet traffic/load and provider troubles. If you have a router that has the capability of giving you traffic load meters/graphs that would give you some ideas that way. The second quote above - you can not hear the caller but they can hear you - tells me that the problem lies in download internet/network traffic speed not upload. (Upload being your voice sent up to the caller) Possible any site user is streaming youtube vids or their favorite internet radio station - and they leave for the day allowing the SIP traffic? Is it possible to disconnect the user internet for 5 minutes to test without their load?
~ Marty Sometimes there ARE ghosts in the machine. I use MSN Live, ask me for the addy if you want. Never, ever, argue with an idiot. They'll drag you down to their level and beat you with experience http://www.vernontelecom.com
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