Email templates or SSI variable

[kentuckyfi]

I need help with finding the SSI variables for email/HTML template. I have a client that is asking for the total of incoming and outgoing calls be listed in the CDR email. 

[Vodia PBX]

Generally speaking, when you set the log level to 9 for email it shows you what variables are available. Most emails are limited in what they have in terms of predefined variables. The queue statistics are a little bit more elaborated, maybe you can use them. 

[kentuckyfi]

So there is not a list of 
{ssi variable total_calls}
{ssi variable total_duration}
{ssi start inline true}

variables/commands anywhere?