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Panasonic KX-TDA15 Installation Manual Page 142

Hybrid ip-pbx.
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3.2 Connection
External Modem Connection
Hybrid IP-PBX (9-pin)
Signal Name
RD (RXD)
SD (TXD)
ER (DTR)
DR (DSR)
After connecting the Hybrid IP-PBX and the external modem, set the power switch of the external modem
to "ON", then the external modem will be initialised with the default values.
The following AT command settings may be required for the modem:
The Data Terminal Ready (DTR) signal should be ignored.
The Data Terminal Equipment (DTE)/Modem flow control should be turned off.
Data compression should be disabled.
Error Correction is not necessary.
Notes
Use an RS-232C straight cable for connection between the Hybrid IP-PBX and external modem.
An AT command (for initialisation, enabling automatic answer, etc.) can only be programmed by
KX-TDA30 Maintenance Console. "AT&F" is stored as the default value.
For more information about the AT command, refer to the external modem's instructions.
142
Installation Manual
RS-232C Port
(9-pin)
To trunk/Hybrid IP-PBX extension
port assigned as the trunk destination
Pin No.
2
3
4
6
To RS-232C port
(25-pin)
External Modem (25-pin)
Pin No.
Signal Name
3
RD (RXD)
2
SD (TXD)
20
ER (DTR)
6
DR (DSR)
Modem

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