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Community Member

SX20: unable to establish call from external

Need Help!

I have setup the IP Address for the SX20 nat to the Public IP add. And i was able to make the call out to the parties.

However, when i tried to accept a externall call, it cannot established the connection.

What should i do???

Steps Done.

- NAT to public IP

- Port forwarding on the router

TCP 1720

UDP 5555-6555

UDP 2326-2486

Kindly advise what should i do/

5 REPLIES
Silver

SX20: unable to establish call from external

Hi Spencer,

please make sure NAT is enabled on SX20 along with NAT IP address on it.

do you get ringing on SX20 ?

you need to check it under h323 settings of SX20.

also make sure port allocation is set to static

Community Member

SX20: unable to establish call from external

NAT - i have set it to AUTO and also key in the Public Address.

Yes, i do get ringing from the external call but it will stuck at connecting and disconnect after that.

Port allocation has already changed to static.

Did a retest based on your reply but failed.

Silver

SX20: unable to establish call from external

can you make NAT to on and check

Community Member

I have exactly the same

I have exactly the same problem despite setting NAT to on and adding a static IP address. Any more ideas anyone please?

Community Member

Hi,Try change UDP to TCP

Hi,

Try change UDP to TCP regarding 5555 to 6555

Regards

Salim

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