ATT DEFINITY Communications System Generic 3V4 Instructions Manual

							CallVisor ASAI Over the DEFINITY LAN Gatewaybbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Physical Connectivitybbbbbbbb
The system assembly that provides the DEFINITY LAN Gateway brouter
application is a pair of circuit packs (a Multi-Function Board [TN2208] and an
Ethernet Alarm Board [TN2170]), and a spacer, that provide a processor, hard
disk, tape unit, Ethernet, and serial ports.  See Figure 13-1.
bbbbbbbbbbbbbbbbbbbbb
S
p
a
c
e
r T
N
2
2
0
8 T
N
2
1
7
0
16 17 18 19 20 15
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Figure 13-1.  DEFINITY LAN Gateway System Assembly in a DEFINITY
Carrier
The system assembly is inserted into a DEFINITY switch carrier using 5
contiguous slots.  Once placed in the DEFINITY carrier, the system assembly is
administered using the change circuit-packs cabinet command.
Carrier Connectivitybbbbbbbbbbbbbbb
In DEFINITY G3V4 software releases (and in DEFINITY G3V2/V3 releases
incorporating a field maintenance upgrade), the system assembly is recognized
as the DEFINITY LAN Gateway application, and the display circuit-packs
cabinet command shows the assembly occupying the selected slots.
For example, in Figure 13-1, the MFB occupies slots 16 through 20. Slot 19
should be administered as a DEFINITY LAN Gateway application on the MFB
circuit pack (TN2208), and DEFINITY administration software will prevent slots
16, 17, 18, and 20 from being administered for other circuit packs.
13-2  Issue 4  September 1995 
						

							CallVisor ASAI Over the DEFINITY LAN Gatewaybbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
However, if the system assembly is installed in a DEFINITY G3V3 or earlier, or in
a DEFINITY G1, the circuit pack is recognized as a BRI circuit pack, and the
display circuit-packs cabinet command shows only one of the physical slots as
a TN556 (BRI) circuit pack.  This is an unsupported switch configuration, and
these switches should be upgraded to G3V4 or to a maintenance release of
G3V3.
Cable Connectivitybbbbbbbbbbbbbbb
The system assembly is provided with two special amphenol connectors, or
cables, that are plugged into the back of the switch at the locations occupied by
the TN2170 and TN2208 (see Figure 13-2). One cable has a female RJ45
receptacle that is used as the 10BaseT Ethernet connection.  This cable is
attached to the TN2170. The other cable consists of DB25 serial connectors and
is attached to the TN2208.  These cables provide Ethernet access and serial
access to the DEFINITY LAN Gateway system assembly.
Issue 4  September 1995  
13-3 
						

							CallVisor ASAI Over the DEFINITY LAN Gatewaybbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
bbbbbbbbbbbbbbbbbbbbbbbb
S
p
a
c
e
rT
N
2
2
0
8T
N
2
1
7
0
16 17 18 19 20
RJ45 10Base-T
RS232
RS232
RS 232
AMP
View from Rear of Cabinet
A
B
C
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Figure 13-2.  Cable Connectivity to the System Assembly
The DEFINITY LAN Gateway cable is attached to a ``demarcation point within
25 feet of the switch, consisting of a WE-104 terminal block with 2 RJ45
connectors punched-down back-to-back so as to provide a ``straight-through
connection.
13-4  Issue 4  September 1995 
						

							CallVisor ASAI Over the DEFINITY LAN Gatewaybbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
The terminal block, in turn, should be attached using suitable 10BaseT class 3 or
better wiring to an Ethernet hub or an Ethernet hub adapter in the host to which
physical connectivity is desired.
NOTE:
AT&T strongly recommends (both for security and performance reasons)
that the Ethernet connectivity between the MFB and the set of hosts with
which it will communicate be a separate LAN segment. Customers who do
not follow this recommendation are subject to an unscrupulous person
gaining access to the DEFINITY LAN Gateway application in order to
commit toll fraud and/or tamper with the real-time aspects of CTI
applications. (Toll fraud is the unauthorized use of your
telecommunications system by an unauthorized third party.  Under
applicable law, the customer is responsible for paying for such
unauthorized usage.)
The serial cable attached to the TN2170 (labeled A in Figure 13-2) should be
connected to a 9600 baud (or better) modem that allows remote access by AT&T
services. This is a similar arrangement to the INADS port provided on DEFINITY.
To enhance customer security, the modem should be turned off except when
access by AT&T is desired.
The serial cables attached to the TN2208 can be used for local administration,
and must be used for initial configuration. These are RS232 ports that allow
connectivity to a dumb terminal or to terminal emulation software on a PC.  The
amphenol connector on the cable attached to the TN2170 is not currently used.
Administrative Console Connectivitybbbbbbbbbbbbbbb
The MFB is provided with two serial ports (labeled B and C in Figure 13-2) that
provide access to the administrative logins.  These ports may be connected to a
dedicated terminal, or to a shared terminal through an ``A-B box arrangement.
Additionally, once the LAN network administration is completed, the
administrative application may also be accessed by the use of ``telnet from a
remote system.
For customers who do not wish to have an additional, physical, permanent
console, it is recommended that the MFB be initially administered using a
temporary terminal, PC, or laptop. Once the LAN administration is completed,
telnet may be used from any host attached to the isolated segment (such as the
DEFINITY LAN Gateway client).  This allows further (and ongoing) administrative
access without the need for a permanent console terminal.  The overall
connectivity scheme is depicted in Figure 13-3 that follows.
Issue 4  September 1995  
13-5 
						

							CallVisor ASAI Over the DEFINITY LAN Gatewaybbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
bbbbbbbbbbbbbbbbbbbbbbbb
Modem
HUB RS232-A
10Base-T
RS232-B/C
Terminal or EmulatorComputer
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Figure 13-3.  Overall System Connectivity
Administrationbbbbbbbb
The DEFINITY LAN Gateway application may be administered using a terminal
or terminal emulator with the RS232 console port, or using a terminal emulator
that supports TCP connectivity using the LAN port.  Initial administration, or
administration to configure or diagnose LAN access on the MFB, should be
performed using a serial port. Ongoing administration may be performed using
either the serial or LAN port.
Administration is supported using a full-screen, menu-based application provided
on the MFB and accessed via login and password.  Administration screen
categories are as follows:
Login/Password Administration Ð Allows administrators to add and delete
additional user logins.  This screen also allows users to change their
passwords.
TCP/IP Administration Ð Allows administration of network parameters,
including: network name and IP address of the DEFINITY LAN Gateway
application, all locally known hosts, and all network routing information.
13-6  Issue 4  September 1995 
						

							CallVisor ASAI Over the DEFINITY LAN Gatewaybbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Brouter Administration Ð Allows administration of the virtual-BRI-port-to-
client-name/link table (see Chapter 7, ``ASAI-Ethernet Protocol in the
DEFINITY Communications System CallVisor ASAI Protocol Reference,
555-230-221).
Maintenance Ð Provides access to maintenance functions,
Port Status/Control  Ð Provides access to port status and control data.
Allows administrators to view status information and terminate client
connections.
These screens are located in 
DEFINITY Communications System Generic 3
Installation, Administration, and Maintenance of CallVisor ASAI Over the
DEFINITY LAN Gateway, 
555-230-223.
System Operationbbbbbbbb
ASAI is a point-to-point protocol. It does not include network addressing
elements that indicate a particular client to which a message should be sent.
Instead, a 1-to-1 correspondence between ASAI BRI ports and clients ensures
that messages are sent to the proper destination.  To support this, the DEFINITY
LAN Gateway application creates a set of ``virtual BRI ports on the circuit pack.
Thus, to support ASAI messaging on an Ethernet network it is necessary to
``map the virtual BRI ports to particular clients.
By performing this mapping, the system software performs a function similar to a
LAN brouter.  (Thus, the DEFINITY LAN Gateway software is referred to as a
brouter.)  It bridges ASAI messages from an ISDN/BRI synchronous point-to-
point network to an Ethernet TCP/IP asynchronous network. The ASAI layer 3
messages remain the same; however, the system uses a TCP ``tunnel protocol
for transport instead of ISDN layer 2.
Figure 13-4 illustrates the relationship among these elements.
Issue 4  September 1995  
13-7 
						

							CallVisor ASAI Over the DEFINITY LAN Gatewaybbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
bbbbbbbbbbbbbbbbbbbbbbbb
Virtual 
BRI Port 2
Virtual 
BRI Port 1
Virtual 
BRI Port 12
Table-driven Brouter
(up to 8 entries)
Port 1
Port 2
Port 12Client 1
Client 1
Client 2Link 1
Link 2
Link 1
Client 1
Client 2
2 links
1 link
D
E
F
I
N
I
T
Y
 
B
a
c
k
p
l
a
n
eMFB Circuit Pack
10Base-T Ethernet
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Figure 13-4.  Relationship of Virtual BRI Ports, Brouter, and DEFINITY LAN Gateway
Clients
Because of the point-to-point nature of ASAI, the brouter uses an administered
table to determine the valid clients for CallVisor ASAI over the DEFINITY LAN
Gateway.  Each table entry provides a dedicated association between a client
and a virtual BRI port.  By using multiple table entries with different values for the
client link, it is possible to provide a single client access to multiple virtual BRI
ports.  The DEFINITY LAN Gateway software represents itself to DEFINITY as a
BRI circuit pack. This means that DEFINITY administration will continue to allow
``ASAI terminals to be assigned to BRI ports. The BRI ports may be actual, as
they are with ASAI-BRI, or virtual, as they are using the DEFINITY LAN
Gateway.  If a BRI port is provided using the BRI circuit pack (TN556), then the
BRI ports are actual.  If a BRI port is provided using the DEFINITY LAN Gateway
system assembly (TN2208 and TN2170), then the BRI ports are virtual and
tunneled over Ethernet TCP/IP.
Once a virtual BRI port is assigned in the brouter application, all its ASAI
messages are sent to the administered client, if it is connected. The brouter also
passes ASAI messages from DEFINITY LAN Gateway clients to the virtual BRI
port and then to the DEFINITY switch.
13-8  Issue 4  September 1995 
						

							CallVisor ASAI Over the DEFINITY LAN Gatewaybbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
To pass messages, the brouter references the table of virtual BRI ports, client
host names, and link numbers. A maximum of 8 such connections or mappings
can exist simultaneously (only 4 are useful in a DEFINITY G3s).  Each entry in
the table has the following form:
Table 13-1.  Brouter Table Format
bbbbbbbbbbbbbbbbbbbbb
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Client Name or IP Address Client Link Number DEFINITY BRI Port Number
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb c c
c c
c c
c c
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
These entries are explained as follows:
Client Name or IP Address  Ð The host name or IP address of the client
authorized to use the specified DEFINITY BRI port. If a client host name is
provided, then a user must ensure that the host table can resolve the host
name.
Client Link Number Ð The link number the client will use when attempting
to connect to the brouter. The valid range is 1 to 8.  This parameter is
used to distinguish between multiple links assigned to a single client.
DEFINITY BRI Port Number  Ð The number of the DEFINITY virtual BRI
port used for this clients requested link. The valid range is 1 to 12.
The DEFINITY LAN Gateway software is shipped from the factory with a default
IP address of 192.168.25.10 and a default host name ``definity.  It is also
shipped with a default client IP address of 192.168.25.20 and hostname ``client.
The brouter listens for connections from clients on TCP port number 5678. The
client must establish a TCP connection to the brouter at this port and IP address.
The customer may change the IP address and/or hostname, but the TCP port is
fixed.
For more information on CallVisor ASAI Over the DEFINITY LAN Gateway, see
the 
DEFINITY Communications System Generic 3 Installation, Administration,
and Maintenance of CallVisor ASAI Over the DEFINITY LAN Gateway,
555-230-223.
Issue 4  September 1995  
13-9 
						

							bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
   
						

							bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
bbbbb
Installation and Test for
CallVisor ASAI
14
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
This is also chapter 2 in the AT&T DEFINITY Communications System Generic 3
CallVisor ASAI Planning Guide, 
555-230-222.
Hardware Installationbbbbbbbb
The CallVisor ASAI link requires the following hardware components:
1. ISDN-BRI Circuit Pack (for CallVisor ASAI-BRI link) or ASAI-Ethernet
Multi-Function Board (for CallVisor ASAI-Ethernet link). (Multiple links may
use both.)
2. Packet Controller Circuit Card (for internal communications)
3. Packet Maintenance Circuit Pack
Check that your DEFINITY Communications System has the above components.
If installation of any of the above components is required, refer to 
DEFINITY
Communications System Generic 1 and Generic 3 Installation and Test
,
555-230-104.
The following hardware may be needed for your specific CallVisor ASAI
application. See 
DEFINITY Communications System Generic 1 and Generic 3
Installation and Test
, 555-230-104, for complete information on how to install and
test the hardware.
Announcement Circuit Pack Ð For integrated announcements
Call Classifier Circuit Pack Ð For predictive dialing call classification or for
call prompting applications
DS1 Interface Circuit Pack (ISDN)  Ð For CPN/BN delivery
Issue 4  January 1996   
14-1