All of a sudden I get cut off with an error 480.

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All of a sudden I get cut off with an error 480.

Postby Darkmatter » 05/26/2018

The number this happened to is my mothers so I've been calling it pretty regularly since getting FPL. Now all of a sudden I can talk for about 20-30sec and I get cut off with a recording saying, "The call was rejected by the service provider, error 480."

I haven't made any changes to my Obi 202 or FPL account so I'm not sure what has suddenly caused this. Unfortunately nobody that I could call is at home right now so I can't test if this problem happens to just my mothers number, or all numbers.

Thanks,

DM
Darkmatter
Just Passing Thru
 
Posts: 17
Joined: 09/13/2017
SIP Device Name: Obi202 (on order)
Firmware Version: Unknown
ISP Name: Eastlink currently. Probably change
Computer OS: Windows 10 Pro 64
Router: asus rt-n53

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Re: All of a sudden I get cut off with an error 480.

Postby Liptonbrisk » 05/26/2018

I suspect the ACK response isn't being received after a 200 OK status due to a SIP ALG issue (or a NAT issue in the router), and, in turn, the call drops.
That error message you hear is generated by the ATA.

If everything was working fine before a power outage, for example, possibly following the proper device reboot order found at the bottom of this post will, temporarily, resolve the problem. I would do the bolded section of this post, regardless.

I suggest reading the first four pages of the PDF guide, especially points #1 and #2: viewtopic.php?f=15&t=18805#p73839. If you're using your own router, ensure whatever modem/router combo your ISP gave you is in bridge mode. Contact your ISP if need be. At the very least SIP ALG should be disabled in whatever modem/router combo your ISP gave you. You can either bypass SIP ALG by using bridge mode, or you can try to get your ISP to disable SIP ALG for you.

Click https://forums.redflagdeals.com/newegg- ... #p28531312.
Read the hardware section.
Then scroll down, and do steps i, (read 2), 3, 4i, 4ii, 5, and 10 (no need to do step 10 if steps i through 5 resolve the issue).


When you reboot devices, remember that this is always the proper device boot order: modem (wait for it to be up and running)–>router (wait for it to be fully up and transmitting
data)–>ATA (in that order). Wait for the first device to be fully up and running before turning or on rebooting the next.
Please do not send me emails; I do not work for nor represent Freephoneline or Fongo. Post questions on the forums so that others may learn from responses or assist you. Thank you. If you have an issue with your account or have a billing issue, submit a ticket here: https://support.fongo.com/hc/en-us/requests/new. Visit http://status.fongo.com/ to check FPL/Fongo service status. Freephoneline setup guides can be found at viewforum.php?f=15.
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Liptonbrisk
Technical Support
 
Posts: 725
Joined: 04/26/2010
SIP Device Name: OBi202
Firmware Version: 3.2.2(Build: 5898EX)
ISP Name: Rogers Cable
Computer OS: Windows 10 x64 Pro
Router: Asuswrt-Merlin

Re: All of a sudden I get cut off with an error 480.

Postby Liptonbrisk » 05/26/2018

Darkmatter wrote: Unfortunately nobody that I could call is at home right now so I can't test if this problem happens to just my mothers number, or all numbers.


http://thetestcall.blogspot.ca/ (you can talk to yourself using the real time echo test, which is option 3).
The 416 and 250 numbers will work fine.

If you find you're only encountering this issue with your mother's number (if all other outbound calls work fine to other numbers), then submit a ticket: https://support.fongo.com/hc/en-us/requests/new.
Select VoIP Unlock Key-->My account inquiry for the issue type. Provide your mother's number in the ticket. Ask if there's a potential carrier issue.
Note that support staff doesn't work on weekends. Should no one respond to your ticket, send a private message to Fongo Support with your ticket number: ucp.php?i=pm&mode=compose&u=7852.
Please do not send me emails; I do not work for nor represent Freephoneline or Fongo. Post questions on the forums so that others may learn from responses or assist you. Thank you. If you have an issue with your account or have a billing issue, submit a ticket here: https://support.fongo.com/hc/en-us/requests/new. Visit http://status.fongo.com/ to check FPL/Fongo service status. Freephoneline setup guides can be found at viewforum.php?f=15.
User avatar
Liptonbrisk
Technical Support
 
Posts: 725
Joined: 04/26/2010
SIP Device Name: OBi202
Firmware Version: 3.2.2(Build: 5898EX)
ISP Name: Rogers Cable
Computer OS: Windows 10 x64 Pro
Router: Asuswrt-Merlin

Re: All of a sudden I get cut off with an error 480.

Postby Darkmatter » 05/26/2018

I'll try that stuff in the morning since it is now late. The only thing is that there was no power outage. Also, my Arris DG3270 is a modem and a router and I found that using the router that came with the modem gave me less hassles then my own router.

I actually do have SIP ALG enabled. I know it isn't recommended for most modem/routers due to improper implementation but without it on to prioritize traffic to the Obi people kept saying that my voice would cut in and out frequently. Once I turned on the SIP ALG the problem mostly vanished and I never had any problems with the phone until today, so that would be about 6 months with SIP ALG turned on.
Darkmatter
Just Passing Thru
 
Posts: 17
Joined: 09/13/2017
SIP Device Name: Obi202 (on order)
Firmware Version: Unknown
ISP Name: Eastlink currently. Probably change
Computer OS: Windows 10 Pro 64
Router: asus rt-n53

Re: All of a sudden I get cut off with an error 480.

Postby Liptonbrisk » 05/27/2018

Darkmatter wrote:The only thing is that there was no power outage.


I've just re-read your first post again. I was extremely tired when I responded initially.

https://www.voipmechanic.com/sip-basics.htm
Image


If all calls start dropping after a certain interval (32 seconds is common), like clockwork, that's almost always SIP ALG related.
200 OK is sent to your ATA by FPL. Your ATA is supposed to send ACK (acknowledge) back. If ACK is not received by FPL's server, then
FPL eventually stops waiting for ACK and replies with BYE (possibly around 32 seconds), ending the call. SIP signalling can be completely broken by faulty SIP ALG features in routers or
modem/router combos. SIP ALG features in many routers (but not all) often modify SIP headers, incorrectly: https://www.voicehost.co.uk/help/sip-al ... our-router.

I'm not sure whether receiving a BYE after 32 seconds (or whatever the interval is for you) should produce a 480 SIP error code by the ATA if ACK is never received by FPL.
That doesn't seem normal to me. And I'm not positive whether that error could be caused by a SIP ALG issue, but when you mentioned the short duration call drop that's the first thing that went through my mind.

https://www.ietf.org/rfc/rfc3261.txt (page 188)
480 Temporarily Unavailable

The callee's end system was contacted successfully but the callee is
currently unavailable (for example, is not logged in, logged in but
in a state that precludes communication with the callee, or has
activated the "do not disturb" feature). The response MAY indicate a
better time to call in the Retry-After header field. The user could
also be available elsewhere (unbeknownst to this server). The reason
phrase SHOULD indicate a more precise cause as to why the callee is
unavailable. This value SHOULD be settable by the UA. Status 486
(Busy Here) MAY be used to more precisely indicate a particular
reason for the call failure.

This status is also returned by a redirect or proxy server that
recognizes the user identified by the Request-URI, but does not
currently have a valid forwarding location for that user.


480 SIP errors are also caused by capacity issues. FPL offers a maximum of 2 channels (you can have a maximum of two concurrent calls) per account. With some service providers, trying to exceed that 2 channel limit produces that 480 error. Possibly trying to register your FPL account with another device or SIP app simultaneously could cause that 480 SIP error. Only one registration per FPL account is allowed at any time. When there are multiple devices/softphones using the same account, only the most recent registration is valid. The previous device will lose registration (despite the ATA's registration status). In other words people sharing their FPL accounts or otherwise trying to register their FPL accounts with smartphone SIP apps/desktop apps while simultaneously using the same FPL account on their ATAs are out of luck. http://www.dslreports.com/forum/r28918051- (At that link you'll see the 480 error with FPL).

When I've encountered SIP error 480, with other services, it's before the call is connected though (whereas, for you, the call is in progress). So, I am a bit puzzled by you receiving the 480 error with the call already in progress.

I actually do have SIP ALG enabled. I know it isn't recommended for most modem/routers due to improper implementation but without it on to prioritize traffic


That's not how SIP ALG works. That's how QoS works. SIP ALG, by itself, does not prioritize anything and certainly can not affect whether your voice starts sounding choppy or cutting out (that's related to upload bandwidth/upload usage on your LAN or an issue with your ISP).
Whatever happened with your voice not being choppy after enabling SIP ALG was coincidental.
This is what Obihai says about resolving choppy audio: https://www.obitalk.com/info/faq/Troubl ... ing-choppy
(reducing TX and RX gain is unlikely to resolve the specific issue you were having).
Page 45 from the PDF guide explains how to start troubleshooting choppy audio: viewtopic.php?f=15&t=18805#p73839.

Regardless, there's enough evidence to suggest other Arris modem/router combos with SIP ALG enabled cause issues for other service providers:
https://kb.intermedia.net/article/3344. Although SIP ALG may not be the root of the problem here, doing to steps below doesn't hurt anything.


so that would be about 6 months with SIP ALG turned on.


Couple of points:

1. SIP ALG isn't faulty in all routers.
2. SIP ALG's behavior could change, in particular after device firmware updates that could be pushed to your Arris device without your knowledge.




A. Read pages 9 and 10 from the PDF guide: viewtopic.php?f=15&t=18805#p73839.
B. On page 43, do steps 1 (only if you're going to use your own router), 2,3,4,5, and 9.

Steps 4 and 5 should be done, regardless (that's the proper way to configure the ATA for FPL).
Step 9, in particular, should be done when dealing with buggy SIP ALG features in routers. voip4.freephoneline.ca:6060 exists due to SIP ALG. Even if SIP ALG isn't the problem,
doing steps 4, 5, and 9 won't hurt anything (4 and 5 should be done, regardless).

Should you discover that your issue only occurs when calling your mother's phone number, then submit a ticket:
viewtopic.php?f=8&t=19286&p=75587#p75585.
Please do not send me emails; I do not work for nor represent Freephoneline or Fongo. Post questions on the forums so that others may learn from responses or assist you. Thank you. If you have an issue with your account or have a billing issue, submit a ticket here: https://support.fongo.com/hc/en-us/requests/new. Visit http://status.fongo.com/ to check FPL/Fongo service status. Freephoneline setup guides can be found at viewforum.php?f=15.
User avatar
Liptonbrisk
Technical Support
 
Posts: 725
Joined: 04/26/2010
SIP Device Name: OBi202
Firmware Version: 3.2.2(Build: 5898EX)
ISP Name: Rogers Cable
Computer OS: Windows 10 x64 Pro
Router: Asuswrt-Merlin


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