Re: [emergency-if] EM INFRASTRCUTURE RECOMMENDATIONS STATEMENT

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Subject: Re: [emergency-if] EM INFRASTRCUTURE RECOMMENDATIONS STATEMENT




From: Kon Wilms <>
To: CONSULTRAC <>, 
Date: Tue, 07 Sep 2004 10:50:49 -0700






A few things to add:

- on one-way delivery of encrypted payloads which are secured by 
conditional access (CA). There is no authentication involved between the 
sender and receiver. Rather, the receiver can either perform 
authentication in software, or via hardware device. In addition to this, 
the authentication can be performed externally (in software or the 
presentation layer software) or internally (software-based middleware or 
on-chip/device/hardware/silicon algorithms).

- under no control, in a one-way mechanism the payload can be sent to 
everyone regardless of their subscription status.

- wireless should include satellite connectivity

- satellite and radio/tv multiplexed signals only fall under cell nets 
in the following cases: for satellite, location-sensitive spot-beam and 
location-sensitive VSAT. For tv, only if the transmitter on multiple 
stations is sending the same data signal. The closest these could be 
would be a 'virtual mesh network'. For all intent purposes they are 
always a star network.

- the correct term for subscription control would be subscriber 
management system (SMS).

- receiver acknowledgement doesn't have to be immediate - it can be 
cached locally and synced periodically with the operations center.

Cheers
Kon