A U1911 is separately deployed in two office locations of an enterprise. The two U1911s are connected through a SIP trunk. In this scenario, calls between extensions in the two office locations are ().
Which of the following statements are CORRECT about how to configure a peer device of the SIP trunk on the U1900 series unified gateway? (Multiple Choice)
To enable the automatic number allocation function, set the BIN channel parameters of the U1900 on eSight, among which the password must be set to the ()?
Which of the following statements is CORRECT about FXO and FXS ports?