CCASS/3 - Frequently Asked Questions 

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CCASS/3 Terminal (C3T) vs Participant Gateway (PG)


What are the considerations for Participants to install PG in addition to C3T?

It very much depends on the operational needs of a Participant.  As PG supports straight-through-processing from PSS to CCASS/3, it is most useful for high volume data exchange where the same data already exist in PSS. Participants can evaluate their operational needs, the ability to develop and maintain the PG/PSS and the associated capital investment before installing PG.

Q6 Are there any restrictions on the number of C3T and PG to be installed in a Participant’s office?

There is no restriction on the number of C3T and PG to be installed in a Participant’s office.

Q7 Does C3T or PG support broad band communication?

Yes.  Participants can subscribe to the highest CCASS/3 WAN connection line speed.  The network bandwidth can reach up to 2M capacity for the WAN connection.

Q8 Are both C3T and PG using the same hardware configuration?

In general, they are quite similar, except PG demands higher capacity in terms of CPU, memory and local hard disk requirements.

Q9 Can Participants use C3T and PG at the same time?

Yes. Participants can use C3T and PG concurrently with one SDNet link.

Q10 What is the backup arrangement for C3T or PG in the event that either C3T or PG fails?

Participants can utilise the backup center services provided by HKEX in case of C3T failure in their offices.  For PG failure, Participants may subscribe for dual PG to improve service availability, or use C3T as a backup for business contingency.

Q11 Is there any file format differences between C3T and PG?

Upload/download batch files format for C3T and PG are different. C3T uses the existing text based format while PG uses ISO compliant (or Tag-based) format.

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