Registration to Voip Provider Failing

[blang008]

Trying to get 3cx registered with an untested voip provider. Issue is that they require a tenant number in front of the SIP username for authorization. However, they want just the telephone number to show in the To/From sip header. Below is what i'm sending and is an example of what they want to see. The attached file ff2 is what i am sending. Everything here is correct except that in the highlighted area, I need to send 260010- in front of the telephone number. The file provider example is how they would like it to look. Any help would be appreciated.

 

[blang008]

Issue resolved. Had to use 3way authentication.

 

[jmooo]

Hello
I'm wondering what exactly you put in the 3cx "3-way authentication" field?
thanks

and did voip.ms become a stable service with your 3cx??

 

[Anonymous]

Voip.ms has been rock-solid for us. Both as a main SIP trunk as well as resold trunks. They are one of the few that have a built out reseller portal.