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 TECHNICAL REFERENCE AND USER’S GUIDE  

REV A

 GSM GATEWAY

21

Call Initiation Period:

In order to make a call over GT20/GT10, the number to be called is dialed. If no other 
number is dialed within a certain period, GT20/GT10 initiates the call by using the digits 
dialed so far. That period can be changed through this program.

Parameters

1..9 

Period to wait for transmitting the dialed digits (sec.)

Default

P = 3

GSM Speed Dial Memory:

A phone book can be created in the non-volatile memory of GT20/GT10 and short-coded 
calls can be made over that phone book. 

Parameters

P   

01..64 

Phone book index 

N   

Telephone number with at most 11 digits 

Notes:

•   If the number of digits is less than 11, then the end of the number can be indicated 
 

by the key 

#

.

•   As an example:
 

By dialing 843 07 8560202

#

, 8560202 can be entered into memory field 07.

 

In order to call this number:

 

7 At the end of the call initiation period, GT20/GT10 initiates the call from the 

 memory.
 

7

#

 When 

#

 is dialed GT20/GT10 initiates the call from the memory.

Erasing Numbers From The GSM Speed Dial Memory:

In order to erase a number from the GT20/GT10 memory, this program can be used. 

Parameters

P   

01..64 

Phone book index

 

842 P  

843 P N   

844 P 

Incoming Voice Level:

The incoming voice level can be adjusted for the calls made over GT20/GT10.

Parameters

0..4 

Incoming voice level (0 is the minimum level)

Default

P = 2

Outgoing Voice Level:

The outgoing voice level can be adjusted for the calls made over GT20/GT10.

Parameters

P   

0..7 

Outgoing voice level (0 is the minimum level)

Default

P = 3

Unconditional Call Forwarding:

This program activates the feature that the entire incoming calls over the GSM module 
on GT20/GT10 are forwarded to another number.

Parameters

Forwarding is not active.

 

Forwarding is active. 

Default

P = 0

Number Entry For Unconditional Call Forwarding:

This program stores the number to which the calls coming over the GSM module on 
GT20/GT10 are forwarded.

Parameters

Telephone number with at most 16 digits 

Notes:

• 

If the number of digits is less than 16, then the end of the number can be indicated 

 

by the key 

#

.

• 

Forwarding is automatically activated when the storing is performed.

Number Erasure For Unconditional Call Forwarding:

This program erases the number to which the calls coming over the GSM module on 
GT20/GT10 are forwarded.

22

851 P  

856  P   

896 P

897 P  

898

Summary of Contents for GT20

Page 1: ...01 2003 G T 20 GT 20 GT 10 TECHNICAL REFERENCE AND USER S GUIDE GSM GATEWAY...

Page 2: ...TECHNICAL REFERENCE AND USER S GUIDE REV A GSM GATEWAY...

Page 3: ...mployed signal levels for both of them should be checked Since frequently interrupted mains supply would affect normal operation of the system take care in making the power connection of the system sp...

Page 4: ...pared in order to present detailed technical information to people who need hardware based information about the GT20 and GT10 GSM Gateways information about installation of the gateway settings that...

Page 5: ...the exchange in Caller ID format upon wish GT20 GT10 has a structure that enables it to generate Caller ID information both in ETSI and Bellcore standards and in FSK format The selection between these...

Page 6: ...s and auxiliary circuits See the figure below for circuit locations S1 SIM slot for GSM module 1 G1 GSM module 1 A1 Analog extension for GSM module 1 C Computer interface reserved for future use L LED...

Page 7: ...cation is established with the GSM module the module is reset and the required parameters are loaded Start up state Even though the signal is above a certain level the channel may be in No network sta...

Page 8: ...ECIFICATIONS Parameter is needed confirmation tone 150 ms 500 Hz It is heard when a parameters needed to be entered or a correct programming action has been taken during programming Error tone 600 ms...

Page 9: ...uld be chosen As single line telephones or telephone systems may be affected by the signal level of the GSM gateway it is recommended to select a place for GT20 10 far away from these equipments 5 The...

Page 10: ...right left direction and then the gateway is fixed to the wall by tightening the lower screw Figure 10 7 Cover of the module is replaced after the SIM cards have been placed and connections of the el...

Page 11: ...sing the button shown as A the SIM cover shown as B is removed The SIM card is placed properly on the panel shown as C The cover B is pushed in place to finalize the installation If the mains voltage...

Page 12: ...lained above If the site has a clean and smooth surface the paper at the back of the holder is removed and the holders are sticked on the surface If the surface is dusty and shaggy rough plaster woode...

Page 13: ...SM Module Out Of Programming Mode The module must be taken out of the programming mode in order to terminate programming and storing new parameter values into the memory Automatic PIN Code Entry Thank...

Page 14: ...he Caller ID information for the call coming over the GSM module to the exchange or telephone over the analog line Parameters P 0 Caller ID transmission is not on line 1 Caller ID transmission is on l...

Page 15: ...se a number from the GT20 GT10 memory this program can be used Parameters P 01 64 Phone book index 842 P 843 P N 844 P Incoming Voice Level The incoming voice level can be adjusted for the calls made...

Page 16: ...nswer This program stores the number to which the unanswered calls coming over the GSM module on GT20 GT10 are forwarded Parameters P Telephone number with at most 16 digits Notes If the number of dig...

Page 17: ...to make an external line call By this way since the calls are made over the GSM modules on GT20 call tolls will be much less than the calls made over normal lines On the other hand when the LCR featur...

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