July 2013 © British Telecommunications plc 2013
Page 39
Secure IP (Grade 4 only) specification notes
IP Protocol: TCP
Port: 443 or 10443
Data Usage / Requirements
Secure IP Grade 4 polling is every 30 seconds. A poll and response results in 288 total bytes
transferred (incl IP headers). A small number of alarms will also typically be generated per
day and these result in 296 bytes transferred. Overall this generates approximately 800 K
Bytes per day, per site.
Traffic Direction
Secure IP establishes an outgoing TCP connection from your network to the BT Redcare
Enterprise Services Platform (ESP). Once this outgoing TCP connection has been
established, traffic over that connection is 2 way.
Additional Protocols
Only TCP is required from your network.
Port Forwarding
No ports need to be forwarded in the incoming direction. The outgoing TCP connection
connects to port 443 or 10443 on the BT Redcare ESP network, so you would need to allow
outgoing access to port 443 or 10443 if you block that by default.
NAT: Not required
GPRS Requirements
You do not need to route GPRS traffic. The GPRS connection from the Secure IP
communicator through to the BT Redcare ESP and on to the ARC is entirely independent of
your network.
DHCP and Static Addressing
The Secure IP communicators can be configured as either DHCP clients or with specific static
IP addresses on your internal network as you prefer.