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.

The AlphaCom must be equipped with license for SIP Trunk.

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
• User Name = Any text, used for Caller ID. This text will be shown in the display on incoming calls from the GSM network, together with the telephone number
• Domain Server = IP address of the AlphaCom

Status will show always show Not Registered.

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 > SIP from: Select User/Tel (Not Reg)
• 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 trunk node. The GSM Gateway can be accessed from the AlphaCom by dialling any directory number with feature 83/<SIP 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. The display of the intercom station will show <Phone number> + <User Name>, e.g. "73905391 (GSM)"
• 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
• Cancel call 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