Telos Zephyr Xstream - Manual (Page 165)

USER’S MANUAL
Section 9: The V.35/X.21 Interface Option 153
9 The V.35/X.21 Interface Option
9.1 Installing the V.35/X.21 Interface option
Some Zephyr Xstream models include the V.35/X.21 interface option. This can be identified by a
miniature hi‐density 40‐pin D connector in interface slot B. The V.35/X.21 option can be easily
added in the field as discussed below.
e
IMPORTANT! WARNING! DANGER!
Always disconnect AC (mains) power and Telephone Circuit Before
removing the Zephyr Xstream’s cover.
Potentially lethal voltages are inside! Failure to observe the above warning
may result in injury or even death!
Refer all servicing to qualified personnel.
w
The optional V.35/X.21 Interface (Telos part # 1701‐00006 [old # 9167‐0000]) can be installed as
follows:
1. Remove power from unit
2. Remove top lid screws (18 or 14 screws) using a Phillips screwdriver. 6
screws top (these will be 1/16th inch Allen‐head screws on model MXP), 6
(or 4) screws on each side. Lift cover straight off the unit.
NOTE: Screws on the top surface of model MXP will require a 1/16th Inch
Allen wrench to remove.
3. Looking at the rear of the unit, note the Interface slots. Locate Interface slot
B. Using a 1/16th Inch Allen wrench, remove slot B cover plate screws.
4. Turn the Zephyr Xstream so the front panel is facing you. Orient the
V.35/X.21 option card so that the grey multi‐pin connector is facing down
and the mounting plate and V.35/X.21 Interface connector is away from
you.
5. Hold the option card between the two connectors on the motherboard for
slots B and C. Move the card toward the rear panel until the V.35/X.21
Interface connector is protruding through the rear panel opening of the
Zephyr Xstream. Lift the card slightly, keeping it parallel with the bottom of
the unit, and move it to the right, aligning it with the Slot B connector.