One Way VOIP Audio Quick Fix

My Other Projects:

###### SOCIAL LINKS ######
######################

[FortinetGuru]

Hey Guys, my fat butt keeps saying "hosted" when talking about on-prem. That's my bad! What VOIP setups do you run and what types of issues are you running into?

[JuanDiaz-hz]

Great video! Your solution is helpful. As an MSP, we often deploy Thirdlane Multi Tenant PBX (hosted) with hardware like Yealink and Cisco (Thirdlane is excellent for MSPs due to their great support and margins). Your fix has significantly aided our techs in resolving audio issues. Thanks!

[bavobostoen]

Thanks, please also create the (promised) more involved/detailed video about fortunate & voip. Best regards!

[DimusTech]

Oh I had those happen so much... I always did the same solution as the internet suggested like you did here but this is the first time I got some explanation here what's going on. Thanks!

[iddmuia]

Thank you very much for this, I deployed an IPSec SD-WAN last week and have been facing a one-way voice issue. I have a hosted YearStar Pbx and phones powered by a cisco 9200 Switch. I hope to do the test tomorrow again and see how it goes. Fingers crossed.

[jpm]

Nice timing, thanks Mike! We just did our cutover this past weekend (6 FGs, FAZ, FMG, and EMS) and I've gotten a few reports of dropped calls from outside callers. We host our Callmanager onsite with SIP trunks coming through (now) the FG 200F so I was just getting ready to start digging into debugging the problem. Now I'm going to follow your suggestion and see if it eliminates the problem.

[wiziek]

When I was working for VoIP PBX manufacturer as support we often recommended either disabling or enabling SIP ALG, most of the time disabling it. Another thing would be double NAT due to poor quality of local ISPs (often those were smalls wisps) or due to client using LTE router with their own second router but no bridge, where double NAT came from.

[patlach]

if you are using a Panasonic system KX-NS and up. Take off the h323, the mgcp and the sip

[CarsAndGadgetsAu]

Thanks for making this video. I wish I had seen this about 6 months ago. We went to a Mitel phone system which used a larger number of ports that fall out of the default port range (~10, 000 lower from memory) and we had to.change the proxy helper mode after researching the issue for a couple of weeks. I can get the specifics when I'm in the office if you'd like :-)

[mattb]

Couple of extra settings that have helped me with VOIP issues are

config system settings
set sip-nat-trace disable
set sip-help disable (Setting was removed in 6.2 onwards *i think*)
end
config voip profile
edit default
config sip
set status disable
end
end

[WiFiTube]

I love the slogan. :-D
"If (Fortinet) Support was good, I would be broke"

[gskapbt]

Bro thanks this video 100% worked for me. I’m a voice guy. Thanks again

[mattadams]

Been there done that with ALG. Nice Tenable shirt also.

[alxirr]

Thanks for possible I have seen this issue before. Thanks for one solution to try .

[BesnikZabergja]

Hi, I have a freeppx behind Fortigate, I did port forwarding though I have no audio whatsoever!

[christianleblhuber]

Thank you. helped also a lot on a hosted pbx and a fortigate with os 7.0.0. we had some difficulties with the quality in the first 5 seconds of the connection. This advice solved this. Great.

[Furcas]

Can confirm, this will fix this issue and sip drops with nec PBX systems. Specifically the sv8500 and sv9500 systems. They both will get really intermittent performance with the alg set to proxy. Deleting the session helper was necessary too. I ran into this a little over a year ago and it drove me up a wall.

[OscarBailly]

Hello, Have you had any audio issues with Grandstream GRP 2615 phones using Fortinet Firewall and switches? Do we need to make any changes on the FortiGate switches or the IP Phones?

[jeremysellers]

Have a on prem pbx looks to be using port 10000. Session helper was kernel based and session 13 was already cleared. Seeing latency and jitter on internal and external calls. Also on a side note I have a third party nms that’s showing broadcast storms on my fortilink vlan. These are used of course as uplink but I feel it may also impact voip quality

[robertgardner]

Still having VOIP 1 way Audio issues after Fortinet installs made a few changes but issue still there. How can I get ahold of you?