TG VoIP GSM Gateways FAQ | Yeastar

TG Series FAQ

What is the default IP address of TG Series?

The default IP address is 192.168.5.150.

What’s the default username and password of TG Series?

The default user name and password of TG Series are:
Username: admin
Password: password

How to connect the TG Series Gateway to MyPBX?

Please check this configuration guide.

How to connect the TG Series Gateway to 3CX Phone system?

Please check this configuration guide.

How to connect the TG Series Gateway to Elastix?

Please check this configuration guide.

How to connect the TG Series Gateway to Trixbox?

Please check this configuration guide.

How to connect the TG Series Gateway to Lync Server 2013?

Please check this configuration guide.

Which type of VPN is supported on TG Series and how to configure it?

TG Series supports OpenVPN. Please click the how-to guide.

Can I send SMS via TG Series?

Yes, you can send SMS on TG Series Web GUI. The sent SMS can be checked on “Outbox” page.

Can I send bulk SMS via TG Series?

Yes, you can send SMS to multiple destinations on TG Series Web GUI. You can type multiple desired numbers as the destination or simply click “Add Contacts” to select the contacts.

Can I check the received SMS on TG Series?

Yes, you can check the received SMS on TG Series “Inbox” page.

What is the maximum number of characters in a SMS message?

TG Series supports 7-bit ASCII and 16-bit unicode encoding scheme. The system recognize the characters and switch the encoding scheme automatically. The maximum number of characters is 300 no matter which encoding scheme is used.

Does TG Series support sending USSD on the WEB GUI?

Yes, you can send USSD via TG Series Web GUI.

Is it possible to integrate my software with TG Series to send and receive SMS?

Yes, you can. Please check this guide.

Does TG Series provide a HTTP interface for SMS?

Yes, it does. Please check this guide.

Why did the SMS sending fail on TG Series?

Check the configuration on TG Series.
1) Check if the GSM trunk status is Ok on TG Series.
2) Check if the Calling Code, Destination, Port are correct on Send SMS page.
If all the configurations are correct, please check if the SIM card is out of credit.

How to insert a SIM card to TG Series?

To prevent damage to the SIM card, please power off the device before inserting the SIM card to TG Series. Insert the SIM card with the angled corner in first and the contact area facing down.
SIM card

How can I recharge the SIM card which is installed in the TG Series?

The balance of the SIM card can be obtained by the following methods:
1) Send SMS. Please contact the GSM service provider to get the message format, which is used to recharge the SIM card. Choose the related GSM port, set the service provider”s service number as destination and enter the message on “Send SMS” page, then click “Send” to send the SMS.
2) Send USSD. Please contact the GSM service provider to get the USSD command, which is used to recharge the SIM card. Enter the USSD command on the “USSD” page, click “Send” to send the USSD.
3) Make a call to the GSM Service Provider. Contact the service provider and provide the SIM card information to them, they will help you recharge the SIM card.

Can I insert or remove a SIM card without powering off the TG Series?

Yes, it is possible to power off individual GSM channel via TG Series Web GUI.
Go to Gateway->Mobile List, and select the desired GSM trunk, click “Power off” and then you can remove or insert the SIM card in the selected channel.

Can I change the IMEI code for the GSM trunk?

Please contact Yeastar Support for details.

How to check the GSM trunk signal strength?

The GSM trunk signal strength is shown on TG Series “Trunk Status” page.

The voice through GSM trunk is weak, how to adjust the volume?

The volume can be adjusted on individual GSM trunk. The option “RxGain” for receive volume, and “TxGain” for transmit volume. Increasing the RxGain value means that the VoIP party hears a bigger voice. Increasing the TxGain value means that the GSM party hears a bigger voice.
Please note that the volume changes may affect the DTMF detection on GSM trunks. Please change the settings carefully and ensure that the DTMF detection is not affected.

Does TG Series support two stage dial when I call from SIP to GSM?

Yes, you can enable two stage dial on the “IP to Mobile” route. TG will answer the call from VoIP party first, a dial tone will be heard when TG answers the call, then you can dial a number through one of TG Series’s GSM trunks.

Can I configure TG Series to use the GSM trunks evenly?

Yes, you can balance the outgoing call through TG by creating a mobile group and choosing the strategy as “Balance”. Select the mobile group as “Call Destination” on “IP to Mobile” route, the system will grab the least used GSM trunk to make outgoing calls.

Can I specify which GSM trunk to use when making an outgoing call?

Yes, you can select the desired GSM trunk on “IP to Mobile” route.

Is it possible to limit certain numbers which can be called out through TG?

Yes, you can configure the “Outbound Dial Pattern” on “IP to Mobile” route to achieve this.

Why do I only hear a dial tone but the call does not go to the VoIP server when calling in TG?

The default mode is two stage dial when you call in TG, so you hear a dial tone once the call is answered by TG. You need to do a second dial operation to call the VoIP server. If you don”t like it this way, you can configure the “Hotline” on “GSM to IP” route. Enter the one number from the VoIP server as “Hotline “. When you call in TG, the call will directly go to the VoIP server.

Can I limit the call duration for the SIM cards installed in TG?

Yes, you can configure the single call max duration and the monthly max call duration for a SIM card on the GSM Trunk edit page.

What network types does TG Series support?

TG Series supports GSM and the frequency range is 850/900/1800/1900MHz. CDMA is also supported and the frequency 800 MHz. So is 3G UMTS with frequency 850/1900 MHz, 850/2100 MHz, 900/2100 MHz supported.

Can I access Internet from the SIM card which is installed in TG?

No, this is not supported on TG Series. You cannot have Internet access from the SIM cards.

How to customize a sound file for TG Series?

Please check the configuration guide.

If you didn’t find your answer in our FAQs, please visit our support portal.