Guralp Systems CD1.1 - Manual (Page 35)

Operator's Guide
The Receiver name field identifies this receiver instance to
communicating senders, according to the CD1.1 protocol. This
name should be unique.
The Station type drop-down menu is also used to identify the
receiver. It can be set to “IMS (international monitoring
system)”, “NDC (national data centre)” or “IDC (international
data centre)”.
If a CMG-EAM has multiple network addresses configured, it
may be desirable to listen on only one of them. Similarly, if a
CMG-NAM has multiple network adapters installed, then a
receiver instance would typically only be concerned with one of
them. The Bind host field can be used to restrict the receiver
instance to listen on only a single address. Leaving this field
set to the default of 0.0.0.0 instructs the receiver to listen to all
configured interfaces and addresses. If any other address is
specified, the receiver will only listen on that address (and the
associated network adapter).
The Bind service field specifies the port (service) on which the
receiver instance should listen. This can be specified
numerically or by name. Port names are converted to numeric
ports using the standard Linux /etc/services file.
The second part of the receiver configuration screen is
illustrated below:
When an incoming CD1.1 connection request packet is
received, the receiver must respond with a packet containing
an I.P. address and port number. The real connection is then
made using these parameters.
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