Mitel Voice Processing Solutions Instructions Manual

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To set up and administer a MESA-Net Async network, you must understand the 
association between communication devices, hardware types, and links. 
Communication Devices are the modems, cables, and other hardware used to 
actually connect MESA-Net nodes, as discussed in Chapter 2. 
Hardware Types define the commands that MESA-Net must use to talk to the 
communications devices, such as Hayes commands for Hayes-compatible modems. 
Hardware types are explained in detail in this chapter. 
Links are...

Configurating MESA-Net Async Hardware and Links 
4-2 
You assign a hardware type to each link and to each remote node (see the Network 
Node Access Table in Chapter 5). When the MESA-Net software needs to reach a 
remote node, it looks up the hardware type assigned to that node and then looks for 
a link that has the same hardware type, as shown in Figure 4-I. 
NETWORK NODE ACCESS TABLE 
LINK INFORMATION 
Link 2 will be used to make calls to Chicago, because 
it is the first originate link with hardware...

Configurating MESA-Net Async Hardware and Links 
Seattle 
Series 6 Server 
i 
Dial-up Connections 
through Modems - 
Hardware Type 1 
Series 6 Server 
San Jose Node 1 
Hardware Type 2 San Jose Node 2  Series 6 Server 
-2 Hardware pes for Communications 
If your MESA-Net Async network plan includes dedicated links between nodes, you 
can use hardware types to make the network configuration easier to administer. You 
can create a hardware type to reach each remote node, and use the same hardware 
type...

Configurating MESA-Net Async Hardware and Links 
Tellabs 33 1 -D Xplexer 
Direct connection 
Telebit T2500NCTorld Blazer modem 
XyLoGiC AnneX Three 
HT Communications I?4004 DSU 
Voicetel NIB 
AT+T Paradyne 38 
1 O/3820 Plus (V.34) 
US Robotics Courier V.34 
To use one of these default hardware types, you simply assign a device number to the 
hardware type through the VoiceMemo Hardware Type Menu. You can assign up 
to seven device numbers on each MESA-Net node, each one associated with a 
specific...

Configurating MESA-Net Async Hardware and Links 
To modify an existing hardware type or create a new hardware type to work with 
your communications equipment, you must have the manufacturer’s documentation 
that defines the protocols required for the equipment. You must also be familiar 
with the commands used by the MESA-Net hardware types, as described in the 
following sections. 
Originate actions are the steps that an originate link takes to connect with an answer 
link of another node on the...

Configurating MESA-Net Async Hardware and Links 
Action Valid Values 
set Signal Hi DTR (pin 20) 
set Signal Lo RTS (pin 8) Timeout Explanation 
n/a Set Signal Hi sets the voltage on either the 
DTR or RTS pin to +12V. Set Signal Lo sets 
the voltage on the specified pin to -12V. 
wait Signal Hi DTR (pin 20) O-255 Waits the specified amount of time to see + 12V 
Wait Signal Lo RTS (pin 8) seconds (Wait Signal Hi) or -12V (Wait Signal Lo) on 
CTS (pin 5) the specified pin before going on to the next 
DSR...

Configurating MESA-Net Async Hardware and Links 
executes its answer actions after the disconnect actions in order to reset the modem 
for the next call. 
The signals the MESA-Net software can monitor for line drop are: 
e DTR (Data Terminal Ready) 
0 
RTS (Request to Send) 
4 
BREAK 
0 
CTS (clear to send) 
DSR (Data Set Ready) 
RI Nng) 
8 
CD (Carrier Detect) 
Select the signal that can be used by the equipment at the site. 
rksheet 
Fill in the Hardware Types Worksheet to gather all of the information...

Configurating MESA-Net Async Hardware and Links 
Device Number Nome 
Originate Actions 
Command String Timeout 
1 Send strina 
 
2 Sleep 3 seconds 
3 Flush device 
4 Sleep 2 seconds 
5 Send access code 
6 Sleep 2 seconds 
7 Read strina connected 20 seconds 
8 
9 
10 
11 
12 
13 
14 
Answer Actions 
Command 
1 Send strina 
2 Sleep 
3 Flush device 
4 W strina 
5 
String Timeout 

 
3 seconds 
connected 0 seconds 
Disconnect Call Actions 
Command Parameter Timeout 
1 Set sianal hi BREAK 
2 Sleep 2 seconds...

Configurating MESA-Net Async Hardware and Links 
Disconnect CaII Action: The commands that both the originate link and the answer 
link use to break off communications with another node. Valid actions are listed in 
Table 4- 1. 
Line Drop Signal: The electrical signal (pin) of the serial connection that the local 
device monitors to determine if the link is still up. 
After installing MESA-Net Async, Multiple Links, or Parallel Links and assigning 
hardware types, you must create and configure the links...