Topex VoIP GSM gateway
Gigaset T300/T500 PRO: Software version 220.127.116.11
Mobilink IP Firmware version: Mobilink-IP-1.2.10-C1P-SDX
Settings in the Mobilink VoIP GSM Gateway
Go to: Network - IP settings
The Device should have a fixed IP address.
Settings are dependent of the customers network.
Go to: VoIP - Codec Settings
Go to: VoIP - DTMF Settings
Change the DTMF Setting to RFC2833
Go to: VoIP - Voice Settings
Gain can be adjusted dependent on the customers request
Go to: Call Control - Settings
Change the PBX IP address to the IP address of your Gigaset T300/T500
Go to: Call Control - Incoming Calls
Change the settings Target, this number is dialled when a GSM call is coming in. In the Gigaset T300/T500, this is the external number that is configured and given to a user or a group.
Go to: Call Control - Outgoing Calls
Go to: Local Users - SIP Users
No ringing during setup outgoing call
Extra, you need to set the option:
Menu - > Call Control -> Parameters -> Add the parameter: tx_progress 0
This will change that de device will not send the ringing signal through early media but using 180 Ringing.
Settings in the Gigaset T300/T500
Go to: Configuration - Lines and Add a new line.
User Name: like defined in the Mobilink Gateway Local Users - Sip users
Password: like defined in the Mobilink Gateway Local Users - Sip users
Provider: Create a new provider.
Use the above settings.
host: IP address of the Mobilink VoIP GSM gateway
Add here the same number as defined in the Mobilink Gateway Call Control - Incoming Calls
Change the Max Connection: to match the number of GSM channels in the Mobilink Gateway, in this example we only had one channel.
We also added a Line Prefix for testing purposes.