The system supports the port types listed below.
Cellular
The cellular interface supports dual SIM operation using major carrier frequency bands in North America, EMEA, and APAC. For more information about cellular ports, see Cellular MDA and ports.
Ethernet
The system supports Fast Ethernet (10/100Base-T) ports. The Ethernet ports are typically connected to field devices, such as Intelligent Electronic Devices (IEDs), AMI collectors, supervisory modules, weather monitoring devices, cameras, and other hosts.
In some cases, an Ethernet port may be connected to a 7705 SAR-18, 7705 SAR-8, 7705 SAR-H, or 7705 SAR-Hc node, which will use the system's cellular port as a backup link.
For more information about Fast Ethernet ports, see the 7450 ESS, 7750 SR, 7950 XRS, and VSR Interface Configuration Guide, '"Port types".
Serial
RS-232 asynchronous ports are typically used for connecting to remote SCADA equipment. The ports support full-duplex communication and interface speeds of 600 b/s, 1200 b/s, 2400 b/s, 4800 b/s, 9600 b/s, 19 200 b/s, 38 400 b/s, 57 600 b/s, and 115 200 b/s. The serial ports can be configured to support raw socket transport; see Serial transport over raw sockets for more information.
Alarm
For information about the alarm port and the number of supported alarm inputs and outputs, see the SAR-Hm and SAR-Hmc Chassis Installation Guide.
For information about configuring alarm inputs, see the 7450 ESS, 7750 SR, 7950 XRS, and VSR Basic System Configuration Guide.
Alarm inputs are configured using the config>system>alarm-contact-input command and sub-commands. For information, see the 7450 ESS, 7750 SR, 7950 XRS, and VSR Classic CLI Command Reference Guide.
To display the status of the alarm inputs, use the show>system>alarm-contact-input all command; see the 7450 ESS, 7750 SR, 7950 XRS, and VSR Clear, Monitor, Show, and Tools Command Reference Guidefor information.
WLAN
The WLAN interface supports the IEEE 802.11 b/g/n WLAN standard. The interface is enabled as a WLAN access point (AP) that remote WLAN stations can connect to. For more information, see Wireless LAN interface. WLAN traffic that is received from WLAN stations connected to the WLAN AP is transported over a Layer 2 service using an Epipe. See the 7705 SAR-Hm and SAR-Hmc Main Configuration Guide for details about configuring services for the WLAN AP.