call
Parameters
call
Custom headers included in the destination call setup. If null, no custom headers are included. At most 16 headers; each key must be 1 to 255 characters, and each value at most 255 characters.
Custom headers included in the destination call setup. If null, no custom headers are included. At most 16 headers; each key must be 1 to 255 characters, and each value at most 255 characters.