The United State Supreme Court in Davis v. Washington, 2006 decided:

a) that a 911 dispatcher could testify to what a 911 caller told them even if they identified the suspect.
b) that a 911 dispatcher testimony of what a 911 caller told them would be considered hearsay.
c) that 911 dispatchers could not testify because they could not positively identify a caller.
d) that a 911 dispatcher could testify to what a 911 caller told them but they could not identify the suspect.