Specifications

Contents–vi
C Communication Requirements
C.1 FCC Requirements . ............................... 79
C.2 Communication Requirements in Canada .............. 80
C.3 Service Requirements ............................. 81
Glossary
Index
Examples
1–1 Configuring a System with Two DECvoice Modules . ...... 18
Figures
1–1 Switchpack Locations on the Module .................. 4
1–2 Setting the CSR Address Switches .................... 5
1–3 Setting the Interrupt Vector Address Switches .......... 6
1–4 Valid Locations for DECvoice in Q-bus Backplane (with
optional third BA23) .............................. 7
1–5 Valid Locations for TLI Assembly on a Bulkhead Panel.... 10
1–6 Cable Connector to Module . . ....................... 11
1–7 Cable Connector to TLI Assembly .................... 12
1–8 TLI Assembly and Module in a System . . .............. 12
2–1 The Complete DECvoice System ..................... 25
2–2 DECvoice DTC04 Module and TLI Assembly ............ 26
3–1 The Q-bus Control and Status Register . . .............. 33
3–2 Ring Structure ................................... 38
3–3 Buffer Structure . . . ............................... 39
3–4 Placing Commands into the Command Ring ............ 41
3–5 Command Format . ............................... 43
3–6 Message Format . . . ............................... 45
3–7 LOAD Command Format ........................... 48
3–8 JUMP Command Format ........................... 50
3–9 STATUS Command Format . . ....................... 51
3–10 Status Message Format ............................ 52