Differences between FXS and FXO ports on the U1910

For S series switches: - A mirrored port is a monitored port. All the packets that pass through a mirrored port are copied to a port connected to a monitoring device. - An observing port is connected to a monitoring device and used to send packets from a mirrored port to the monitoring device.

For WLAN devices: The port isolation function isolates interfaces in a VLAN, providing secure and flexible networking solutions. To implement Layer 2 isolation between interfaces, you can add these interfaces to different VLANs. However, this approach wastes VLAN resources. Port isolation can isolate interfaces in the same VLAN, and a port isolation group can effectively implement Layer 2 isolation between these interfaces. Port isolation offers secure and flexible networking solutions. An ACL is a packet filter that filters packets based on rules. A device with an ACL configured matches packets based on the rules to obtain the packets of a certain type, and then decides to forward or discard these packets according to the policies used by the service module to which the ACL is applied. Uncontrolled mutual access between different network segments brings security risks. After an ACL is applied to a QoS traffic policy or simplified traffic policy, the access rights between the users on different network segments are restricted.

IAD FXS port does not output voltage.

IAD OSU board and U19 board OSU has FXS port and FXO port, the general FXS port analog line users, referred to as S port; FXO port analog relay from the operator pulled over the analog line, referred to as O port

To match FXS users with FXO users on the U1900, do as follows: When configuring the AT0 trunk, configure a default called number corresponding to the slot number and port number of the FXO port. This default called number can be bound to the FXO user. As a result, when a call comes in through the FXO port, the phone of the FXS user rings.