Comtech EF Data CDM-625A - Page 28

CDM-625A Advanced Satellite Modem MN-CDM625A / CD-MN-CDM625A
Table of Contents Revision 4
xxii
N.3 Data Rate vs. Composite Rate............................................................................................. N–2
APPENDIX P. OPEN NETWORK OPERATIONS ............................................................... P–1
P.1 Overview ............................................................................................................................ P–1
P.2 IBS ...................................................................................................................................... P–1
P.2.1 IBS Clock/Data Recovery and De-jitter ................................................................................................... P–2
P.2.2 IBS Framing ................................................................................................................................................ P–2
P.2.3 IBS Engineering Service Channel ............................................................................................................. P–2
P.2.4 IBS Scrambling ........................................................................................................................................... P–2
P.3 Drop and Insert (D&I) .......................................................................................................... P–3
P.3.1 D&I Primary Data Interfaces .................................................................................................................... P–4
P.3.2 D&I Framing ............................................................................................................................................... P–4
P.4 IDR ..................................................................................................................................... P–5
P.4.1 IDR Primary Data Interfaces ..................................................................................................................... P–6
P.4.2 IDR Engineering Service Channel ............................................................................................................ P–6
APPENDIX Q. OFFSET QPSK OPERATION ..................................................................... Q–1
APPENDIX R. QUALITY OF SERVICE (QOS) ................................................................... R–1
R.1 Overview ............................................................................................................................ R–1
R.1.1 QoS Terminology....................................................................................................................................... R–1
R.2 Layer 2 QoS......................................................................................................................... R–2
R.2.1 Modem Tx Data Rate vs. QoS Tx Data Rate ........................................................................................... R–2
R.2.2 Flow Control .............................................................................................................................................. R–3
R.2.3 Port-based Layer 2 QoS ............................................................................................................................ R–3
R.2.4 VLAN-based Layer 2 QoS .......................................................................................................................... R–5
R.3 Layer 3 QoS......................................................................................................................... R–8
R.3.1 Layer 3 QoS Max-Pri Mode ...................................................................................................................... R–8
R.3.2 Layer 3 QoS Min-Max Mode ................................................................................................................. R–10
R.3.3 Layer 3 QoS DiffServ Mode ...................................................................................................................
R–12
R.3.3.1 Layer 3 QoS Congestion Avoidance................................................................................................. R–12
R.3.3.2 Layer 3 QoS List of Supported RFCs (Requests for Comment) ..................................................... R–13
R.4 QoS with ACM (Adaptive Coding and Modulation) ............................................................. R–14
R.4.1 Maximum Clipping ................................................................................................................................. R–14
R.4.2 Minimum Data Rate .............................................................................................................................. R–14
APPENDIX S. TRANSMIT SPECTRUM FILTERING OPTIONS ......................................... S–1
S.1 Overview ............................................................................................................................ S–1