How to configure Issabel, Elastix or FreePBX to FGX4508G FIBERME GSM Gateway using peer SIP trunk

IPPBX

Model: Issabel

Ip: 192.168.99.103

GATEWAY

Model:  FGX4508G

Ip: 192.168.99.194

Topology#

In Issabel#

Configure the SIP Trunk#

To establish a connection between Issabel and the FGX4508G GSM Gateway, you need to create a SIP trunk.

Navigate to PBX → PBX Configuration → Trunks.

Add SIP Trunk Click on Add SIP Trunk to configure a new trunk.

Trunk Name:   FGX4508G  (as the trunk name)

Add the following details under PEER Details :

• type=peer

• qualify=yes

• host= ( GSM Gateway IP Address )

• disallow=all

• allow=ulaw

Submit Changes

Configure Outbound Route#

Navigate to PBX → PBX Configuration → Outbound Routes.

Add Outbound Route:

• Click on Add Route to create a new outbound route.

• Route Name: Enter a name for the route, such as FGX4508G-Outbound.

• Dial Patterns: Set the Dial Pattern to define which calls will be routed through the FGX4508G GSM Gateway. You can add specific patterns for local, national, or international calls, depending on your needs.

• Trunk Selection: In the Trunk Sequence for Matched Routes section, select the previously created FGX4508G trunk.

• click Submit Changes

Configure Inbound Calls#

To receive calls via the FGX4508G GSM Gateway, you need to configure an inbound route in Issabel.

Navigate to PBX → PBX Configuration → Inbound Routes.

Add Incoming Route:

• Click on Add Incoming Route to create a new inbound route.

• Description: Enter a name for the route, such as FGX4508G-Inbound.

• Set DID Number: Leave the DID Number field blank to receive calls from any GSM number, or enter a specific DID number if you are using one in this case we will set it to (8888)

• Set Destination: Select the destination to route incoming calls, such as a specific extension, a ring group, or a voicemail box.

Submit Changes

In FGX4508G#

Configure the SIP Endpoint#

Navigate to VOIP -> VOIP Endpoint

add new SIP Endpoint

• Name: Issabel

• Enable Anonymous

• Registration: IP Based

• Hostname or IP Address: 192.168.99.103    IP-issabel

• Port: 5060

• Transport: UDP

Configure Outbound Call Routing#

Navigate to Routing  -> Call Routing Rules

Add  New Call Routing Rule

Routing Name: From Issabel TO SIM

Call Comes in From: Issabel

Send Call Through: GSM-4

Navigate to advanced

Caller_Dial_pattern :  Match Pattern     X.

Configure Inbound Call Routing#

Navigate to Routing  -> Call Routing Rules

Add  New Call Routing Rule

Routing Name: From SIM TO Issabel

Call Comes in From: GSM-4

Send Call Through: Issabel

Navigate to advanced

Forward Number : 8888 This will forward the call to the destination with the number 8888 configured in Issabel (for example, an extension, ring group, etc.).