
DX-80 I
NSTALLATION AND
M
AINTENANCE
M
ANUAL
P7290 IMM
1-11
Figure 7: COM4 (Central Office Module - 4 Port)
MDM (Modem Module)
The Modem Module is a self-contained integrated modem unit that is installed at JP5 and JP6 in the upper
right corner of the CPM. The integrated Modem Module allows the servicing Telephone Company to access
the telephone system programming and remote maintenance utilities from an off-site location (password
verification required). When the MDM is used, the remote location programming is done via the proprietary
DOS-based PC program “PC-DBA.” This program can be obtained free of charge at the Comdial Web site
www.comdial.com or from the Comdial
Customer Services Department. (Diskette and shipping charges may
apply.)
When installed, the servicing technician uses PC-DBA and a modem (in the PC) to place a call to the site
where the DX-80 is installed. If one of the voice processing systems are installed, routing to the modem
extension is automated. Otherwise the person who answered this data call must transfer the call to
Extension 199*. Once the modems have established the data connection, PC-DBA may be used to perform
all servicing operations.
(*The MDM default extension number is 199. This number can be changed and therefore may be different
for some DX-80 systems.)
Figure 8: MDM (Modem Module)
Power Failure
Transfer port
– associated
to CO Line
port 1
CO Line ports
1~4. (Circuit 4
equipped
with
CNG
FAX
Detect)
Содержание DX-80
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