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Appendix E | Secure IP (Grade 4 only) specification notes
IP Protocol: TCP
Port: 443
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 his generates approximately 800 K Bytes per day, per
site.
Traffic Direction:
Secure IP establishes an outgoing TCP connection from your network to the 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 on the Redcare ESP network, so you would need to allow outgoing access to port 443 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 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.
British Telecommunications plc 2012
Installation, Maintenance and Operation Manual V24a (June 2012)
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