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#436569 03/26/10 02:49 AM
Joined: Mar 2010
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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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#436570 03/26/10 03:43 AM
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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...)
#436571 03/26/10 04:32 AM
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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.
frown

#436572 03/26/10 05:06 AM
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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.

#436573 03/26/10 07:10 AM
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Quote
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.
Quote
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

Moderated by  nameless, pvj 

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