GSM gateway (Mobile VoIP)

This article describes the setup of the GSM gateway MV-370 (Mobile VoIP) from PORTech Communications Inc

Configuration example

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

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!).

Configuration of the MV-370

The MV-370 unit is configured via a web interface. The default IP address is 192.168.0.100, mask 255.255.255.0. The default IP address can be set by pressing the reset button (located next to the SIM card) for 3 seconds. Other settings will be kept. 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

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

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

Routing Mobile to LAN

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

• CID = *
• URL = *

With this setting there will be a second Dial-Tone presented on incoming calls from the GSM network. The user must dial the intercom number. The dialling can be terminated by '#', or alternatively one can wait for 5 seconds and the call will be established.

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 > 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.

Configuration of AlphaCom E

The AlphaCom E needs to be configured with a SIP registrar node.

Features

Outgoing calls from AlphaCom:

• Selective: Prefix + phone number: Yes
• Dialled number shows in display: Yes
• Put call on hold and transfer: Yes
• Call to predefined phone number from DAK: Yes (Set "SIP dial delay" = 10)
• Call to predefined phone number from Substation: Yes (Set "SIP dial delay" = 10)
• M-key control from line: No (SIP INFO message not generated by gateway)
• Door Opening (6) from line: No (SIP INFO message not generated by gateway)
• Cancel when remote phone hangs up: Yes
• Automatic cancel when remote phone is busy: Yes
• On-hook when intercom cancel the call: Yes
• Signal when dialing prefix and no lines are available : Busy tone (Camp on Busy)
• Call Forward (71) from intercom to external phone: Yes
• Forward Call Requests to phone: Yes
• Forward if phone do not answer: No (The gateway responds with "200 OK" immediately)
• Call to remote service requiring DTMF signalling (e.g. Call Center): No (DTMF not sent)
• Call to remote service: DAK 0 transmit DTMF "*", DAK 1 = DTMF "#": No (DTMF not sent)
• Call from analogue phone (ATLB) to external phone: Yes
• Call from subscriber in remote AlphaNet node: Yes
• Call from SIP extension to external phone: Yes (X-Lite)
• Call from IP Substation: Yes
• Call from IP Master: Yes

Incoming calls from GSM network:

• Two-step (selective) inward dialling - second dialtone: Yes
• Two-step (selective) inward dialling - voice prompt: No
• Automatic call to predefined station: Yes
• Delayed automatic call to predefined station: No
• Caller ID: Yes
• Call to a remote node (AlphaNet) using Area Code or Global number: Yes
• Call to a SIP extension: Yes (X-Lite)
• Make group call, with answer Meet Me (99): Yes
• M-key control from line: No (SIP INFO message not generated by gateway)
• Door Opening (6) from line: No (SIP INFO message not generated by gateway)
• Cancel call when on-hook from line: Yes
• On-hook when cancel at intercom station: Yes
• Call to intercom station which is transfered (71) to an other station: Yes
• Put calls on hold and transfer (from intercom station): Yes
• Force calls from GSM network to be in Private: Yes (Set AlphaPro flag "Incoming calls from SIP in private ringing mode")
• Call to IP substation: Yes
• Call to IP Masterstation: Yes