Data Transmission Protocol; General Message Format; Figure 5-1 Mci General Message Format; Table 5-2 Data Transmission Protocol - NEC Neax 2000 IVS System Manual

SPECIFICATIONS

3. DATA TRANSMISSION PROTOCOL

Table 5-2 shows the transmission control codes used for the data exchange between the PBX and the VMS.
CODE
SA
UA
STX
ETX
EI

3.1 General Message Format

Figure 5-1 shows the MCI general message format:
CHAPTER 5
Page 38
Revision 1.0

Table 5-2 Data Transmission Protocol

System Address: ASCII code 31
Unit Address: ASCII code 21
Indication of the start of message text: ASCII code 02
Indication of the end of message text: ASCII code 03
Entry Index – Describes the type of message being sent (A)
S S U E
T A A I
X
Key: STX
SA
UA
EI
ETX

Figure 5-1 MCI General Message Format

ND-45895 (E)
DESCRIPTION
(digit "1") or 30 (digit "0")
16 16
(exclamation point "!")
16
16
(
16
Message Text
Start of Text
System Address
Unit Address
Entry Index
End of Text
( )
)
E
T
X