3
1
1
1
1
Device
1 pcs
2
2
2
2
Adapter
1 pcs
3
3
3
3
Antenna
1 pcs
4
4
4
4
Telephone
line
1 pcs
5
5
5
5
Communication
line(optional)
1 pcs
3.
3.
3.
3. Main
Main
Main
Main features
features
features
features and
and
and
and functions
functions
functions
functions
�
GSM cellular network incoming and outgoing.
�
DTMF Caller ID.
�
Support secondary dial.
�
Send polarity reversal signal for billing meter while connection.
