GSM gateway (Mobile VoIP)

This article describes the setup of the GSM gateway MV-370 from PORTech Communications Inc

Configuration example

The GSM Gateway must be registered to the GSM network as a regular mobile phone subscriber. The gateway must be equipped with a SIM card. Via the gateway calls can be made from the AlphaCom E to the GSM mobile, and also from the mobile side in to the AlphaCom E.

Configuration of the MV-370

The MV-370 unit is configured via a web interface. The default IP address is 192.168.0.100. Before accessing the web page, confirm that the IP address of the configuration PC is on the same subnet, e.g. 192.168.x.x.

• Username: voip
• Password: 1234

Network settings

Change the network settings according to the network environment. Select Network > WAN Settings:

• IP Type = Enable Fixed IP
• IP = IP address of the Mobile VoIP unit
• Mask = Network mask
• Gateway = IP address of the network gateway

SIP settings

In the menu SIP Settings > Service Domain, enter information for "Realm 1":

• Active = ON
• Display Name = Any text
• User Name = Access number to the gateway. This is the directory number you must dial on an intercom station to access the GSM gateway. The directory number must be programmed in the AlphaCom directory table with feature 83/<SIP node>.
• Register Name = Access number to the gateway
• Domain Server = IP address of the AlphaCom
• Proxy Server = IP address of the AlphaCom

Status will show Registered when the gateway is registered at the SIP Registrar server in the AlphaCom.

Enable DTMF signalling by SIP INFO method:

• SIP Settings > DTMF Setting: Enable Send DTMF SIP Info

Route settings

Routing of calls from Mobile to AlphaCom

Select Route > Mobile to LAN Settings
Alternative 1 (default):

• CID = *
• URL = *

This setting will give a second Dial-Tone on incoming calls to AlphaCom. The user must then dial the intercom number. The Mobile VoIP unit will connect the call 5 seconds after having received the last digit in the intercom number.

Alternative 2:

• CID = *
• URL = 101

With this setting incoming calls will automatically be connected to station 101 in the AlphaCom.

Mobile settings

• Mobile > Settings > Mobile PIN Code: If the mobile needs to be unlocked by a pin code you must choose Enable, and enter the pin code, and confirm the pin code

• Mobile > Status: Shows that the SIM card in in place, and that the Mobil VoIP unit is registered on the GSM network.

Limitations

Outgoing calls from AlphaCom:

• No DTMF tones can be sent from AlphaCom to the line during conversation (Nettbank kan ikke brukes).
• Digits during conversation (e.g. door opening, M-key) not possible from the phone

Configuration of AlphaCom E

The AlphaCom E needs to be configured with a SIP registrar node. Because the MV-370 needs to registrer to a SIP server, the AlphaCom must be equipped with license for SIP phone (not SIP Trunk license!).