HP JG189-61201 - HP A-MSR 4-port FXS/1-port FXO DSIC Mod

MSR 4FXS + 1FXO voice DSIC module (DSIC-4FXS1FXO) - Smart Interface Card (SIC) module with four RJ-11 line connectors for common subscriber lines and one RJ-11 connector for analog telephone, fax access and also can connect AT0 loop trunks of exchanges