Comtech EF Data DTMX5000 SpectraCast - Manual (Page 169)

Rev. 1 C–1
C
Appendix C.
HIGH AVAILABILITY SERVER
(HAS-2000)
The purpose of high availability server is to develop Broadband IP transmission using
DVB technology over cable TV and satellite system that which will have high
availability so that the operators can provide “Always ON” services.
C.1 Overview
The High Availability Server (HAS-2000) is located in a satellite hub or at a cable
operator head-end site. It has two main physical interfaces and multiple logical
connections. There is a physical interfaces of 100Base T connected to the control and
management (C&M) LAN on which all of the Gateways/INAs at the head-end are
connected.
Another physical connection is an EIA-232 port that is used to connect the HAS-2000
with an IF switch that enables to switch the IF inputs/outputs between the
Gateways/INAs. The same connection to the IF switch can be done via the C&M LAN
since the switch over command of the HAS-2000 also is send as IP packet. In this case
there is a need for external device that converts the IP packet to a physical interface of the
IF switch.