04-11-2014 8:16 AM
I have a POLYCOM VOIP phone, that just in the last couple of days, I cannot go back to answer a call on hold? I have contacted my vendor and this is his response:
"We have been working with other engineers to isolate this issue and apparently it has been originated by your modem. We will investigate if we can disable what it is doing that is causing the calls to not be retrievable after putting them on hold."
The thing is, I am a remote business and have 3 different offices in different cities, and all the ATT modems are doing the same thing. When I plug my device into another server from COMCAST, phone works fine. So it is not the device that is having the issue, but the ATT modems or ATT UVERSE itself.
Please let me know if there is something that you can do in your central office to get back to normal ! Were there any upgrades that your customers were not aware of?
Rebooting the modems do not solve this issue.
04-11-2014 8:44 AM
04-11-2014 8:59 AM
04-11-2014 11:08 AM
Some ports may be locked by default within the modem, i know i had to go in manually and open up port 6000 i think? when i was unable to host a game but was able to play a hosted game with 6000 closed, maybe the device you have uses a different port for incoming outgoing and on hold? just a thought. Im not sure if you said this has ever worked or if it just started happening. If it just started happening then well resets happen things get switched on and off for no reason in the electronic world for no apparent reason. Also do you have an IT guy servicing your computers etc? some ports will be locked by ITServices in order to eliminate security breaches or other forms of attck.
04-11-2014 11:21 AM
just did a quick search and found this:
The ports the phone uses / requires are listed in the UCS Admin Guide, in your example UCS 4.0.1, on page 332 within the Ports Used on Polycom Phones section.
Usually you only need the SIP (5060) and the RTP (2222 => 2269) range.
Set these for UDP and TCP
s0 it looks like ports 2222-2269 in the routers need to be open
04-11-2014 11:29 AM
04-11-2014 11:32 AM
04-11-2014 11:43 AM
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