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46
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Silence after dialling
This parameter has no effect. It is used only for GSM gateway with TC35 modules up to
firmware version 3.0.
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Parameters for dialling supervision and intelligent incoming call routing
Dialling end identification:
If the GSM Gateway does not identify the end of the dialled
number by any faster method (refer to the Call Sorting table), it waits for a pre-set timeout. Then
(or immediately if it identifies the dialling end by a faster method), it sends a short beep, whose
length can be adjusted, and starts establishing the connection with the called party.
•
Parameters of all tones transmitted by GSM Gateway to line
These parameters can change basic GSM Gateway tones that are heard by the connected
extension. It is mainly the busy tone
and dial tone
. The course of
these tones may be important for such automatic devices as the answering and recording
machine or telephone set with automatic Redial. If roaming is activated, the special roaming
dial tone
is used to warn the subscriber that the connection is more expensive.
The pre-set tones meet the requirements of European standards. Tones coming from the
GSM network, of course, cannot be changed and may differ from the pre-set tones.
•
Tone dialling parameters
The GSM Gateway both receives and transmits tone dialling. Time parameters for reception
of tone dialling must be 20 ms shorter at least than the fastest tone dialling to be received
by the GSM Gateway (some telephones transmit 70 ms pulses and 70 ms spaces). Time
parameters for tone dialling (sending) are used for outgoing calls only if the GSM Gateway
dials the extension number.
The pre-set parameters meet the requirements of European standards.
•
Maximum time of call parameters
Parameters 158 and 159 are suitable to set maximum time of GSM call. Range is from 10
sec. to 2550 sec. (42.5 min.) or without limit - default value. 30 sec. before end you can
hear warning tone. During last 10s short tone repeats every second. 0-no limit. Parameter
158 is applicable for outgoing calls, parameter 159 for incoming calls. PSTN calls cannot be
limited by this parameters.
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Parameters enabling data functions
These parameters enable or disable the use of serial port as a modem for sending and
reading of SMS on a PC, execution of SMS commands for switches, and transmitting of
SMS on input statuses and “Security Centre” function. Each mode of use can be disabled
individually. For call supervision, information about all calls including pseudo-tariff metering
can be send out via serial interface – se parameter 166.
•
Parameter 181 function
This parameter is set to zero by default, it means that the GSM gateway does not connect
incoming data calls automatically. By selecting a value other than zero, you activate the
automatic data call answering function – the GSM gateway receives the call automatically
and, if the data connection is established successfully, sends the “CONNECT” message to
the serial interface. In this mode, you can also receive data calls manually by entering the
ATA command.
•
Help for parameters:
101 = the parameter is only used if the SIM card requires the PIN.
102 = is used for automatic entering.
103 = Can disable your number presentation to the called party. Does not work with PSTN.
104 = Volume control option by +/- 6 dB to the GSM network.
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Страница 32: ...30 5 2 Description of GSM Gateway PCB ...
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