Comtech EF Data DMD50 Installation And Operation Manual page 17

Table of Contents
DMD50 Universal Satellite Modem
G.1.3 Near Side AUPC .................................................................................................................. G-2
APPENDIX H.
H.1 Drop and Insert (D&I) ............................................................................................................... H-1
H.1.1 Drop Only ............................................................................................................................ H-3
H.1.2 Insert Only ........................................................................................................................... H-3
H.1.3 Mode Selection .................................................................................................................... H-4
H.1.3.1 PCM-30 ............................................................................................................................ H-4
H.1.3.2 PCM-30C ......................................................................................................................... H-4
H.1.3.3 PCM-31 ............................................................................................................................ H-5
H.1.3.4 PCM-31C ......................................................................................................................... H-5
H.1.3.5 T1-D4/T1-D4-S ................................................................................................................ H-5
H.1.3.6 T1-ESF/T1-ESF-S ............................................................................................................ H-5
H.1.4 Multidestinational Systems .................................................................................................. H-5
H.1.5 Drop and Insert Mapping ..................................................................................................... H-6
H.2 Configuring the Modem for Drop and Insert .......................................................................... H-8
H.2.1 Data Rate .............................................................................................................................. H-8
H.2.2 Operational Network Specification ...................................................................................... H-9
H.2.3 Terrestrial Framing - Drop Mode/Insert Mode .................................................................. H-10
H.2.3.1 Insert Terrestrial Frame Source ...................................................................................... H-10
H.2.4 D&I Sample Configurations and D&I Clock Setup Options ............................................. H-11
H.3 D&I Maps and Map Editing ................................................................................................... H-15
APPENDIX I.
I.1 Introduction ................................................................................................................................. I-1
I.2 Prerequisite .................................................................................................................................. I-1
I.3 Efficient Drop & Insert Mode .................................................................................................... I-2
I.3.1 Calculating the Required Satellite Bandwidth ........................................................................... I-3
I.3.2 Calculating the Basic Efficient D&I Rate .................................................................................. I-3
I.3.3 Calculating the Efficient D&I Rate with E1 Signaling .............................................................. I-3
I.3.4 Calculating the Efficient D&I Rate with Enhanced Asynchronous Overhead .......................... I-4
APPENDIX J.
J.1 Configuring the modem to use the Ethernet Data Interface (Optional) ................................ J-1
J.1.1 Ethernet Flow Control ............................................................................................................... J-1
J.1.1.1 Half-Duplex Flow Control ................................................................................................ J-2
J.1.1.2 Full-Duplex Flow Control ................................................................................................. J-2
J.1.2 Ethernet Daisy Chain ................................................................................................................ J-2
J.1.3 Ethernet QOS Type ................................................................................................................... J-2
J.1.4 Ethernet QOS Queue ................................................................................................................. J-2
J.1.5 Setting Up The DMD20/DMD20 LBST Ethernet Bridge To Operate Like A FIFO............... J-3
J.1.6 Packet Statistics ........................................................................................................................ J-4
DROP AND INSERT (D&I) .................................................................. H-1
EFFCIENT DROP AND INSERT (D&I) ................................................. I-1
ETHERNET DATA INTERFACE SETUP ............................................. J-1
xi
Revision 3
MN-DMD50