Technical information

Technician’s Handbook
150
Replacing CEPT or DS1 Formatter Cards with
DS1/CEPT I or II Cards
If your system software is Lightware 31 R1.0 or higher, use
the CEPT Formatter II (MC269CA) or DS1/T1 Formatter II
(MC270CA) cards for replacement.
If your system software is Q10.7.14 or higher, use the CEPT
Formatter I (MC264CA) or DS1/T1 Formatter I (MC263CA)
cards for replacement.
1. Connect a laptop computer to the card by using a
straight through serial cable or anull modem adapter.
2. If using a modem:
- Set the modem DIP switches for initial setup according
to the manufacturer’s suggestions.
- Connect a PC to the modem, launch a VT100
emulation session, and set the serial port settings to:
Speed = 38400, Data bits = 8, Parity = none, and Stop
bits =1.
- Enter the modem command settings (according to your
type of modem), then power down the modem.
- Change the modem DIP switch settings to normal
operation.
3. Connect the modem or straight through cable, from a
laptop or PC, to the replacement card and access the
maintenance window.
4. Run acommunications package for VT100 terminal
emulation (dumb terminal) and set to 8 bits, no parity, 1
stop bit, and 38400 baud rate.
5. Enter the following information for each DS1/CEPT
Formatter I card:
- Signaling type (CAS or DPNSS)
- D-channel inversion for T1 DPNSS
- Main control version (either prior to, or after, Q10.7.8).
- Line length for T1
Note: See “DS1/CEPT Formatter I Card (MC263CA and MC264CA)
Communications” on page 111 for information on inputting the
information.