3rd party BAS cannot see Symbio 700 points but can see the U60 Lontalk device after putting a DSN in the U60.
In the app you go to tools then Lontalk and that's where you will see that there is no DSN show in Lontalk the reason is that the DSN in above picture at the red arrow was installed an invalid DSN entry.
For example, a invalid entry would be 1.1.4.
The reason this is an invalid dsn entry is the Domain ID Hex is a 1.
To make it an valid DSN the Domain ID Hex needs to be double digits if the Domain ID is a single digit for example 1 then it is required to be double digit like this 01 for Domain ID Hex.
So, the DSN would be 01.1.4 as show in below picture at arrow 1 and then on arrow 2 you should see program ID which is the xif file that is now loaded in the U60.
For a copy of the xif file upload it from link below
LCU Symbio 700 Lontalk XIF File
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.