Telos Zephyr Xstream - Manual (Page 39)

USER’S MANUAL
Section 3: GUIDED TOUR of the HARDWARE 27
w
IMPORTANT!
Do Not enable PS2 power if you plan to connect the S interface of your Xstream to a Zephyr
Classic or ZephyrExpress.
Doing so could cause damage to one of the units!
i
ISDN TIP!
If you are connecting to ISDN using the S (4-wire) Interface you can ignore the status of the
NT1 U Sync LED. It will be flickering rapidly if the U (2-wire) interface is not used.
V.35/X.21 Interface Option
Offers interface to digital synchronous serial bit‐streams, primarily for non‐ISDN applications.
Both V.35 and X.21 equipment can be accommodated with the use of the appropriate cable.
More information can be found in manual Section 9 (The V.35/X.21 Interface).
Communications and Control Ports
RS‐232 (DCE)
Using a female 9‐pin D‐sub connector, this is an
RS‐232 serial port using the standard modem‐
style format. The default line protocol is: 8 bits, 1
Stop Bit, No Parity, and no flow control. Bit rate
can be adjusted from 2400 to 57,600 bps using
the rs232 menu selection in the first SYSTEM
Menu. The default for this setting is 19,200 bps
.