NEC -Allowing  3rd party sip to register to PBX via to BX500 SBC

 you are using the BX500 for remote ST500 users and you have loaded the scripts 

In this scenario we are also using TCP for the  ST 500 connection In this case we are using TCP 58299 (instead of default 5070) for our north bound interface (this is port opened in the firewall)

Our southbound port is the standard 5070 to the phone system (Standard sip extension in 84-20-01)

When using the script  the default setting is for the northbound interface only accept user agents that match ST500 or ST400 only ( this means that the BX will only accepts the ST 500 registration invite only )ALL other attempts at registration by other products will be rejected 

This can be found in SETUP/SIGNALLING&MEDIA/SBC/CLASSIFICATION/

Each 3rd party device as part of there registration attempts announces who they are 

In this case MicroSIP

In this case 3CXPhone softphone 

In this case Yealink

What we want to achieve is to allow this user agent to register on the BX 

SETUP/SIGNALLING&MEDIA/SBC/Classification – select one of the Classifications – it doesn’t matter which one as we are going to add it to both anyway 

Add a new rule 

For Micro Sip 

Name  :  User Agent Match to ST4XX , ST500 and MicroSIP

Condition : header.user-agent contains 'ST500' or header.user-agent contains 'ST450' or header.user-agent contains 'MicroSIP'

3Cx

Name  :  User Agent Match to ST4XX , ST500 and 3CXPhone

Condition : header.user-agent contains 'ST500' or header.user-agent contains 'ST450' or header.user-agent contains '3CXPhone'

Yealink

Name  :  User Agent Match to ST4XX , ST500 and Yealink

Condition : header.user-agent contains 'ST500' or header.user-agent contains 'ST450' or header.user-agent contains 'Yealink'

Or combination of the above 

Name  :  User Agent Match to ST4XX , ST500 , Yealink and MircoSIP

Condition : header.user-agent contains 'ST500' or header.user-agent contains 'ST450' or header.user-agent contains ' Yealink' or header.user-agent contains 'MicroSIP' or header.user-agent contains '3CXPhone'

Now save 

Got to the InternalSTusers and add the newly created rule to that one 

So both these are now set to the new rule 

Then apply

Then save