Topic Last Modified: 2011-01-31
To define the public switched telephone network (PSTN) gateway for a Survivable Branch Appliance at a branch site, specify the following:
- A fully qualified domain name (FQDN) or IP address for the
gateway peer that the Survivable Branch Appliance or Survivable
Branch Server is associated with for routing inbound and outbound
Important: If you are defining a Survivable Branch Appliance, this is the gateway to which the Mediation Server inside the Survivable Branch Appliance will connect for PSTN connectivity.
- The listening port to be used for Session Initiation Protocol
(SIP) messages. By default, the ports are 5066 for TCP and 5067 for
Transport Layer Security (TLS) on a gateway, private branch
exchange (PBX), or Session Border Controller (SBC). On a Survivable
Branch Appliance at a branch site, the default ports are 5081 for
TCP and 5082 for TLS.
- For security reasons, we strongly recommend that you use TLS.
If you are defining a Survivable Branch Appliance, refer to your
Survivable Branch Appliance vendor documentation to verify that
your Survivable Branch Appliance supports the TLS protocol.
Important: For security reasons, it is strongly recommended that you deploy a gateway that can use TLS.
|If you want to add a PSTN gateway, you can set it up later, but full functionality will be limited until the PSTN gateway is defined and configured.|
For additional details about designing a Mediation Server topology and specifying gateway information, see Define Mediation Servers for a Site in the Deployment documentation.