Chapter 1
:
Overview
Revision 1
Media Gateway/Media Player 3.0.5 Provisioning and Installation Guide
Copyright ARRIS Enterprises, Inc. 2015. All Rights Reserved.
19
Conditional Access (CA)
Video service entitlements
Emergency alert system (EAS) alerts
Pay-per-view poll requests
Initializations
Authentication
Switched digital video (SDV) information
The Media Gateway uses the DOCSIS path to interact with the AHS and the ARRIS Portal to
obtain:
TV electronic program information (EPG)
Software updates
Account information updates
VOD metadata
Log file uploads
SNMP device-level diagnostics
The Media Gateway sends HTTP requests directly to the AHS, where the AHS caches the
requests. If the Media Gateway requests data not in the AHS pull-through cache, the AHS then
forwards the request to the portal. Events are staggered and scheduled to occur daily in the
early-morning hours when traditional cable modem traffic is at its lowest.
The Media Player portal interactions include a nightly check-in and log dump.
For IP address assignments, software loading, and other configuration data, the Media
Gateway uses the standard DOCSIS communications channel.
ARRIS DSG
Upon bootup, the Media Gateway transactions differ depending on whether they are on a
Motorola or Cisco headend.
Motorola Headends
A new Media Gateway finds an OOB frequency from a well-known scan list of OOB
frequencies supported by the CableCARD. Upon receiving a hit from the DAC (ARRIS only), that
configures the card as “MediaCipher CableCard MCard DOCSIS” and the Media Gateway may
enter the DSG or IPDL mode. Once the mode is selected, the Media Gateway joins the
appropriate DSG or IPDL MCAs and the appropriate controls are forwarded to the CableCARD.
Cisco Headends
Each time a Media Gateway boots, it finds the OOB signal using a brute force scan to
determine the DCM (Downstream Channel Mode) setting. If the DCM is either Mixed
DAVIC/DOCSIS or DOCSIS, the Media Gateway switches to DSG mode. The DOCSIS modem
then finds an appropriate DOCSIS downstream that supports DSG and forwards headend
control messages to the CableCARD.
Summary of Contents for DCX3635
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