Manual

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The previous figure shows the settings for gateways (Line Configuration > VoIP Providers > Add Providers >
SIP Gateway Device). Many of the settings are populated automatically by EarShot IFB, but can be changed to
any value you wish.
- General Settings -
Name - Give your gateway a unique name.
- Account Information -
Username and Password - Locally generated values that the gateway will use to register to
EarShot IFB.
- Sip Settings -
Address - The IP address of the gateway.
Gateway Binding Port - Automatically populated with an unused port. Must be mirrored into the
Gateway Settings.
SIP Trunks
With regard to EarShot IFB, we refer to SIP Trunks as provider accounts that don’t require registration with a
provider’s server. These types of services are also referred to as using “IP Authorization” because call authorization
is accomplished by sending calls to a specific, fixed IP address at the customer’s site. Likewise, outgoing calls are
authorized if they come from the customer’s static IP address.
In this way, SIP Trunks are simpler on the provider side because there is no username or password associated with
the account, and no login procedure. Trunks can be more complex on the EarShot IFB side, because EarShot IFB
must have a way to filter incoming calls as being from your provider, and not some random call on your network.
If setting up a SIP trunk behind a router or firewall, special port forwarding rules will need to be applied to your
network. Your trunking provider often has guides for this process.