Mitel Voice Processing Solutions Instructions Manual

							MESA-Net &nc 
-Net Async Ne ork exam 
A basic MESA-Net Async node has just two links, with which it can simultzmeously 
be connected to two other nodes via a direct connection or modems. If modems are 
used, each node must have at least two modems, one for originating calls and one for 
answering calls. One serial port on each system is configured as the originate link, 
the other as the answer link, as shown in Figure 3-3. 
When the correct conditions are met, the node uses its originate link and modem to 
call the answer link on another other node and establish a connection. Once a 
connection is established, both nodes exchange messages intended for mailboxes on 
the other node. Regardless of which node initiates a connection, the MESA-Net 
sohare operates in full-duplex mode, sending messages in both directions. 
Seattle 
Series 6 Server 
I 
Boston 
Answer W 
Or 
M 
Series 6 Server 
+%&diylEifF - 
Basic MESA-Net Asvnc allows 
Series 6 Server 
San Jose each node to be corkected to two 
other nodes at the same time. 
Here, Boston called San Jose, 
and San Jose caled Seattle. 
5lOlnl”d 
Figure 3-3 A Simple MESA-Net Async Network 
Any node can call any other node. Each node initiates network connections based 
on time of day, the number of messages waiting to be 
sent, the prioriT of the 
messages, or a combination of these factors. 
For step-by-step instructions on installing and configuring the MESA-Net Async 
optional feature, refer to CI’ 5735, Configure MESA-Net Async. 
The Link Enable optional feature allows a Centigram server to simulmneously 
connect to more than two other servers, as shown in Figure 3-4. (However, one 
node cannot originate more than one link to another node unless the Parallel Links 
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							MESA-Net Async 
optional feature is installed.) The maximum number of multiple links is 
16 (32 in a 
two modules of a Model 640 server configured for Load Share), Each link requires 
an additional port on either the Smartcard or the Serial 16/32 card. 
With multiple links, an originate link can be configured to make calls to any other 
node on the network, or it can be dedicated to a single node for high-traffic 
situations. An answer link can receive calls from any other MESA-Net Async node. 
Seattle 
Series 6 Server 
Boston 
Series 6 Server 
Series 6 Server 
Mu/tip/e links allow San Jose to 
originate connections to SeatHe 
San Jose and Boston simultaneously 
Figure 3-4 MESA-Net Async with Multiple l.i& 
When two Centigram servers need to eichange a lot of messages, a single link may 
not be able to carry all of the traffic in a timely manner. 
The Parallel Links optional 
feature for 6.0 allows MESA-Net Async servers to have up to 8 links for exchanging 
messages between any two nodes, as shown in Figure 3-5. These parallel links 
require additional ports on the Smartcard or Serial 16/32 card. The links can be 
either dial-up or direct connections, 
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							MESA-Net Async 
Seattle 
UD to 8 links 
Series 6 Server Boston 
Series 6 Server 
Parallel links allow more than one link between 
two nodes, thereby increasing fhroughput. 
(Other modems on both nodes not shown.) 
Figure 3-5 ES&Net Async with ParaIM Links 
With Parallel Links, the originating node first establishes a single connection to a 
remote node and begins transferring messages. Then, as long as there are still 
messages to be sent, the originating node establishes additional connections at 
specified intervals to increase bandwidth. For example, with an interval (delay) of 
10 
minutes, the originating node creates a new connection every 10 minutes until the 
maximum number of parallel links is reached, or until no more originate links are 
available. With a delay of 0, the originating node creates a new connection as soon 
as the previous one succeeds. 
You can define the maximum number of parallel links and the parallel link delay 
the number of minutes that an existing connection must be open before another link 
is established. 
Both the originating and answering nodes must have the Parallel Links optional 
feature installed, and both servers must have VoiceMemo version 5.03 or later. 
For step-by-step instructions on inst+iing and configuring the Parallel Links optional 
feature, refer to Cl? 
5711, Configure MESA-Net Async Parallel Links, in Chapter 4. 
ME et Async loa 
VoiceMemo Release 6.0 provides a new feature for MESA-Net Async called Load 
Share. Load Sharing allows you to configure links on more than one module in a 
Series 6 server Model 640, as shown in Figure 3-6, rather than restricting links to 
module 
1. Each module is limited to a total of 16 links. 
Load sharing has the following advantages: 
* There is a built-in fault tolerance mechanism within MESA-Net. For 
example, if MESA-Net is configured in modules 
1 and 2, and module 2 is 
taken out of service, network messaging continues in module 
1. 
3-G  
						

							MESA-Net Async 
e You can distribute MESA-Net processing by offloading some of the links 
to another module. For example, you can configure two modules with 8 
links each rather than configuring 
16 links in one module. Load 
distribution helps alleviate system resource problems (such as prompt 
slowdowns) that can occur when MESA-Net is competing with 
integrations or with other applications installed in the same module. 
0 You can now have a total of 32 MESA-Net links on your Centigram server 
(16 links for each of two modules). This is particularly significant at large 
sites that do an extensive amount of messaging and that may need the 
additional MESA-Net traffic capacity. 
Headquarters 
Branch office 
2-Module Series 6 Server 
Series 6 Server 
I 
I 
’ ” , If Module 1 goes out of service, 
Module 2 re-establishes any 
connections that were lost 
Branch Office 
Series 6 Server 
Load share enables the 
headquarters site to balance the 
messaging traffic it receives from 
the two branch offices, Serial interface 
s 
Figure 3-6 MESA- 
et Async load Share 
MESA-Net Async Load Share requires the -Multiple Links optional feature and a 
Serial 
16/32 card for each module that will connect to the network. 
Note: Do not confuse the MESA-Link cards and cables with MESA-Net. 
MESA-Link cards and cables connect the modules W&V% a Model 
640 server. MESA-Net connects 
bemeen Centigram servers. 
For step-by-step instructions on installing and configuring the MESA-Net Async 
Load Share optional feature, refer to Cl? 5710, Configuration of MESA-Net Async 
Load Share. 
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							MESA-Net Async 
in et 
iili 
You can combine the different MESA-Net options, such as Parallel Links and 
Multiple Parallel Links, in your MESA-Net network to meet the requirements of 
each site and network, as shown in Figure 3-7. By installing the right optional 
features and hardware at each site, you can correctly size nodes for everything from 
low-traffic satellite of&es to high-traffic network hubs. 
Seattle Boston 
I 
igure 3-7 MESA-Net Async with Multiple links and Parallel 
inks 
3-8  
						

							e 
VoiceMemo Release 6.OA and later 
Task Procedure 
et ync Installation, tion, and Connection 
Configure MESA-Net Async ................................................................ a? 5735 
Configuration of MESA-Net Async Load Share .................................. a? 5710 
Install a Serial 16/32 
Card.. ...................................................................... 
CP 3029 
Install a Smartcard Serial Interface.. .......................................................... 
Cl? 3041 
Connect and Configure a MESA-Net Async Direct connection ............... CP 5736  
						

							Install a Serial 16132 Card 
Page 1 of 4 
VoiceMemo Release 6.OA and later 
This procedure describes how to install a Serial 
16/32 card serial interface in a Series 6 
server. 
te: A Serial 16/32 card and a Smartcard cannot be installed in the same 
server module. However, they can be installed in different modules in a 
Model 640. Only one Serial 16/32 card can be installed in each server 
module. 
If you are replacing a Smartcard with a Serial 16/32 card, you must 
move all existing cables and applications that use the Smartcard to the 
Serial 16/32 card. Be sure to put the cables in the same order on the 
Serial 16/32 card as they were on the Smartcard; the cable that was 
connected to Port 
1 on the Smartcard must be moved to Port 1 on the 
Serial 16/32 card. 
ANGER! 
Disconnect the system from its power source before connecting 
cables, components, or both. 
Protect your system from ESD damage during handling of all 
components. 
WARNING! 
This procedure requires that you shut down the module resulting in 
an interruption to call processing on- the module. Centigram 
recommends that you perform this procedure during periods of low 
call traffic. 
Step 
Reference 
bserve Precauti 
1. Put on a grounded wrist strap attaching the other end to the Series 6 server. Doing 
so protects the component from electrostatic discharge. 
2. Shut down the system and turn off the power, if you have not already done so. 
Removing a component while the power is on can severely 
damage both the component you are workine: on and others. 
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							Cl? 3029 
Page 2 of 4 
VoiceMemo Release 6.OA and later 
Step 
3. Wait one minute after you turn off the power before you remove any components. 
The hard disk should stop spinning and be quiet. 
4. When removing a component, place it on a non-conductive surface, such as an 
anti-static bag. Make sure you have the anti-static bags required before you begin. 
@B Install the Serial 16/32 card Host Adapter 
5. Remove the cover on the system. On a Model 640, remove the front panel of the 
CPU assembly. 
6. Using the plastic loops, remove the MVIP cable. You only need to remove it from 
enough cards so that you can install the Serial 16132 card. 
7. Configure the Serial 16/32 card host adapter. 
8. Pick up the Serial 16/32 card host adapter with the connector facing away from you. 
9. Identify the correct slot in the card cage for the Serial 16/32 card as defined in the 
Technical Reference. 
10. Insert the host adapter into the alignment groove. 
11. Slide the host adapter along this groove until the host adapter connector is touching 
the corresponding connector on the backplane. 
12. Be sure that the two connectors are properly aligned, then press firmly on the edge 
of the host adapter until the connectors are fully seated. 
13. Tighten the screw that holds the host adapter in the card cage. 
14. Replace the cover on the system. On a Model 640, r&ace the front panel on the 
CPU assembly. 
@!I2 Install the DigiCHANNEL Ports Module(s) 
15. Place the DigiCHANNEL ports module(s) next to the Series 6 server on a tabletop 
or shelf. If you are installing two modules, you can stack them one on top of the 
other. 
If you are installing the Serial 16/32 card in a rack environment, you can place the 
ports modules on a utility shelf next to the Model 640. 
WARNING! 
Never connect or disconnect the EBI In or Out Cable when the 
system power is on. 
Dot. Rev. A 
Reference 
T’R 1908, Tech 
Ref Manzd  
						

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Page 3 of 4 
VoiceMemo Release 6.OA and later 
Step 
16. Plug one end of the 12 EBI 
ca bl e into the Serial 16/32 card host adapter card and 
the other end into the connector on the DigiCHANNEL ports module labeled “EBI 
IN.” Figure 1 shows the Serial 16/32 card installed in a Model 640. 
17. If you are installing two DigiCHANNEL ports modules, plug one end of the 18” 
cable into the “EBI OUT” connector on the first ports module, and the other end 
into the “EBI IN” connector on the second ports module. 
ote: The DigiCHANNEL $orts modules do not need an external power 
supply when connected to a Series 6 server. 
Ports Modules 
EBI Cable 
Serial 16/32 
Host Adapter 
4071vm6 
Figure el eriaI 1 
ar 
onnections 
@T 
re 
18. Turn on the system power and wait for the system to initialize. Reference 
DOE. RN. A