Allied Telesis PIC module, 1 x Sync interface RS232, X.21 or V.35 AT-AR023
SERIAL SYNCHRONOUS PORT ACCS INTERFACE CARD 1 PORT IN
For use with AR-series routers and AR040 Network Service Module NSM.
-Maximum flexibility.
-Interoperable with all AT-AR series routers and Rapier L3 switches.
-Compact size.