Compatible Systems MicroRouter 900i - Manual (Page 14)

8 Chapter 2 - Getting Started
The MicroRouter 900i includes one DIN-8 to DB-25 RS-232
sync/async data cable. This cable supports RS-232 asynchronous
modems, synchronous leased and switched-56K CSU/DSU’s, and North
American ISDN Terminal Adapters.
v Note: Please use only this cable when connecting your line commu-
nication device to the MicroRouter 900i. The cables provided with
other equipment do not provide all of the connections required between
connector pins for correct hardware handshaking and synchronous
clocking.