Emergency Calling - E911 - US/Canada - Dispatchable Location - Length Limit

Regarding Nomadic Emergency calling in US/Canada.

Q1 - Is there a length limitation for "Address Line 2" in the Emergency Address screen ?

Q2 - Which NENA standard for the PSAP Location element does ZP support ?

NENA v1 limited this field to 20 characters

NENA v2 increased this field to 60 characters.

Q3 - I want to verify in the Emergency Address screen the field "Address Line 2" is supposed to be the Dispatchable Location at the street address that is supposed to be communicated to first responders . 

Is Address Line 2 displayed the PSAP operator as the NENA Location ?

NENA Data Exchange Format

See attached NENA doc, browse to v2.1 standards.