IPO SCN Trunk is UP but showing DOWN

[hussa89]

Hi All
Customer have TWO Avaya IPO 500v2 Control Unit

IPO 500 Control Unit release 9.1.6
IPO 500 Control Unit release 9.0.5

SCN Trunk is up and working but other side extension are not showing on IPO release 9.0.5 and SCN is showing down.

Any response will be appreciate.

[hkeski]

Something is blocking h.323 traffic?
I had similar issue and foud out that firewalls (Fortigate) had h.323 helper setting enabled. Disabling this from both ends solved the problem

[rdagur]

Originally Posted by hkeski

Something is blocking h.323 traffic?
I had similar issue and foud out that firewalls (Fortigate) had h.323 helper setting enabled. Disabling this from both ends solved the problem

Hi Hkeski, i am using i[o 500 v2 (9.1) with UC module , my mobile one x client working fine in Lan but on 3G/4G there is no voice in call (customer using FORTIGATE fire wall.

[hkeski]

Originally Posted by rdagur

Hi Hkeski, i am using i[o 500 v2 (9.1) with UC module , my mobile one x client working fine in Lan but on 3G/4G there is no voice in call (customer using FORTIGATE fire wall.

Hi,
With Fortigate, you have to disable sip helper etc.
Open the Fortigate CLI from the dashboard.
Enter the following commands in FortiGate’s CLI:
config system settings
set sip-helper disable
set sip-nat-trace disable
reboot the device
Reopen CLI and enter the following commands – do not enter the text after //:
config system session-helper
show //locate the SIP entry, usually 12, but can vary.
delete 12 //or the number that you identified from the previous command.

Disable RTP processing as follows:
config voip profile
edit default
config sip
set status disable
set rtp disable

[mlombardi1]

"SIP helper" sounds like some sort of ALG. Those often cause problems, especially with media.