404 Not Found

[Wendelspanswick]

We've been getting a number of 404 Not Found errors on our SIP trunks, they tend to come in clusters at certain times.
Here is one example:

Call or Registration to 07xxxxxxxxx@(Ln.10000@TalkTalk SIP) has failed. [ V4 xx.xx.xx.xx:5060 UDP target domain=unspecified mFlowKey=904 ] replied: 404 Not Found; from IP:xx.xx.xx.xx:5060

(I've blanked out some bits for security with x's)

Trying to decipher the Activity log, is the 404 error because...
1. The 3CX could not access the TalkTalk SIP or
2. TalkTalk could not access the 07 number.

I have the detailed Activity log for the above event but would rather not post it on an open forum and its a lot of x's to insert!

 

[leejor]

I would think that it is something closer to the second scenario, given that the X'd out IP is probably that of your provider, and the 404 came from them. If this is indeed the case, then I would try to determine a pattern, all mobile numbers, a valid number ?, then ask Talktalk what would cause this, or, if they will, review one failed call. It may be the state of the called party, or the mobile was diverted to a non existent number, or even voicemail.

 

[Wendelspanswick]

Thank you for that, the second option was the one that I had suspected.
It affected calls to mobiles over the SIP trunks yesterday morning, I will raise a ticket with TalkTalk.

 

[ian.watts]

You will also get a 486 Busy Here from your SIP provider when the called party is 'busy'.