Outgoing Connection

For the connection from the IP Office to COM:

• The destination is a single static IP address resolved by DNS of the subscription server address entered during the system's initial configuration.

• The IP Office alternates between TCP ports 443 and 8443 until successful.

• The link uses the HTTP 'WebSocket' protocol and TLS 1.2 with mutual authentication.

• The link carries a regular heartbeat, subscription information and basic details of the IP Office system (type of servers and software version).

• All other traffic on the link is controlled by the IP Office system settings; there are no access controls elsewhere.

• If the link is interrupted, the IP Office system goes into a 30-day error mode with daily alarms.

  • If connection to the subscription server is lost, the IP Office system continues running with the existing subscription entitlements it has received for 30-days.

    • During the error mode period, all operations and features are unaffected. The system outputs daily alarms in the system logs.

    • Successful reconnection clears the alarms and error mode.

    • If the 30-day error mode period expires, all subscription features and telephony are deactivated.

  • If when connected, any subscriptions expire, the feature or features associated with the expired subscriptions cease operation immediately.

  • • The person responsible for ordering subscriptions must ensure that they are aware of subscription expiry dates. They must renew subscriptions in a timely manner, including time for renewal orders to be processed.

Incoming Connection

All incoming traffic from COM is routed to the IP Office through the existing subscription connection established above. It should not require any additional configuration on the customer network if the system has successfully obtained it subscriptions.