Jump to content

New ViaTalk servers not working with PBXnSIP


James Mahood
 Share

Recommended Posts

When I register the trunks with the new ViaTalk servers I can no longer places calls from one trunk to another. This hasn't been a problem with the old ViaTalk servers. There appears to be a compatibility issue between version 2 and version 3 of PBXnSIP software and the new ViaTalk servers. The Invite comes into the server but no extensions ring. ViaTalk plays a recording that the party is unavailable.

Link to comment
Share on other sites

When I register the trunks with the new ViaTalk servers I can no longer places calls from one trunk to another. This hasn't been a problem with the old ViaTalk servers. There appears to be a compatibility issue between version 2 and version 3 of PBXnSIP software and the new ViaTalk servers. The Invite comes into the server but no extensions ring. ViaTalk plays a recording that the party is unavailable.

 

Well, they send the INVITE of the PBX back to the PBX - and the PBX responds with "Loop Detected". Not sure why they send the request back to the PBX, including a lot of Record-Route and Via headers.

Link to comment
Share on other sites

  • 2 months later...
  • 2 weeks later...

Simultaneous ring to a mobile phone has one way audio most of the time even with PBXnSIP version 3.1.1.3110. This issue is even worse if you have a virtual number and someone calls the virtual number and you answer on your mobile. In that case you will always get one way audio.

 

Another issue with PBXnSIP and ViaTalk's new servers is if you have another device on you network like and IP phone or a soft phone directly registered to ViaTalk and you call their support number you will always get one way audio. Calls to other number and your ViaTalk trunks work fine.

 

Beware ViaTalk is getting very uncooperative if they think they are trouble shooting PBX issues. My last issue they insisted that I shut off the PBX and register my line to a soft phone. Only then would they run a trace or do any testing of my one way audio issue when answering a ViaTalk Simultaneous ring call on my mobile phone. Unfortunately for us they were right. The problem vanished when the trunk was registered to a soft phone.

Link to comment
Share on other sites

  • 2 weeks later...
Simultaneous ring to a mobile phone has one way audio most of the time even with PBXnSIP version 3.1.1.3110. This issue is even worse if you have a virtual number and someone calls the virtual number and you answer on your mobile. In that case you will always get one way audio.

 

Another issue with PBXnSIP and ViaTalk's new servers is if you have another device on you network like and IP phone or a soft phone directly registered to ViaTalk and you call their support number you will always get one way audio. Calls to other number and your ViaTalk trunks work fine.

 

Beware ViaTalk is getting very uncooperative if they think they are trouble shooting PBX issues. My last issue they insisted that I shut off the PBX and register my line to a soft phone. Only then would they run a trace or do any testing of my one way audio issue when answering a ViaTalk Simultaneous ring call on my mobile phone. Unfortunately for us they were right. The problem vanished when the trunk was registered to a soft phone.

 

The problem is that ViaTalk obviously uses the SIP proxy model as interface to the customer. That has a couple of problems. First, you can see the Record-Route headers, which is a open door for DoS of their service and a interop nightmare because of all the devices out there that have problems with strict and loose SIP routing. The next problem is that SIP UDP packets can easily get bigger than 1492 bytes, many routers cut additional bytes of the UDP packet off. Maybe the softphone ignoes that and thats the reason why it works with the soft phone but not the PBX.

 

I don't blame ViaTalk for being uncooperative. It is simply impossible to troubleshoot such complex problems.

 

Let me say it again, session border controllers are worth every single cent!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...