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Work IP softphone not working when on VPN using TGP broadband

chawa
Level 2

I have a weird issue: when i connect to my TPG wifi and then connect to my work VPN and use my work softphone I experience one way audio when I dial an internal extension. If I hotspot to my mobile carrier (optus) and connect to my work VPN. I do not experience any audio issues with my work softphone and dialling internal extensions.

 

It doesn't make sense because all my voice traffic should be travelling via my work VPN but what I don't understand is why I only experience this issue when I am connected to home WiFi and then my work VPN.

 

Has anyone experienced anything unusual like this before?

 

Cheers,

 

 

2 REPLIES 2
david64
Level 11

Hi @chawa . Which direction is the one-way audio?

Is it the same when you call an external number through the VPN?

How long has it been doing this? Just started suddenly or from when you changed to NBN?

Assuming you are using a laptop, can you connect to your router using ethernet?

Can you use a friend's NBN connection to test this, either TPG or another? 

Does your work have a standalone internet connection (not part of their internal network) you can connect to? I think it will be for your IT section to work this out.

 

I've just found this thread. It's been going for quite some time.

https://community.tpg.com.au/t5/Broadband-Internet/VPN-IP-Phone-One-Way-Audio-on-TPG-NBN/td-p/23133/...

And, it has a suggested solution regarding DNS.

 

chawa
Level 2

Hi @david64,

 

Thanks for your response.

 

Here are my answers to your questions:

 

Which direction is the one-way audio?

ANS: Party A calls Party B and Party B can hear Party A but Party A cannot hear Party B

 

Is it the same when you call an external number through the VPN?

ANS: Yes

 

How long has it been doing this?

ANS: It's hard to say because I can't recall if it was doing this last year when wee were working from home but before I was on TPG my ISP was amnet and I didn't have any issues

 

Just started suddenly or from when you changed to NBN?
ANS:

 

Assuming you are using a laptop, can you connect to your router using ethernet?

ANS: Tried that and I was getting the same behaviour

 

Can you use a friend's NBN connection to test this, either TPG or another? 

ANS: I tested this with a colleague using Telstra and we did not have any audio issues

 

Does your work have a standalone internet connection (not part of their internal network) you can connect to? I think it will be for your IT section to work this out.

ANS: Yes and it all worked perfectly

 

This internal DNS issue is seemig more plausible.