| Note: Before you begin, see the Configuration Note for
your switch type. |
This topic contains information about
switch integration processes, terms, and requirements, including:
- An explanation of switch integration
and the links available for use with DEFINITY� Enterprise Communications
Server (ECS) switches
- A list of supported features
- An explanation of Distributed
Communications System (DCS) operations
- Configuration diagrams that
show the basic setup methods for connection through a local area network
(LAN) link.
Introduction
Switch integration is the sharing
of information between a voice messaging system and a switch to provide
a seamless interface to callers and subscribers. A fully integrated
voice messaging system uses information sent from the switch to answer
telephone calls and also sends information back to the switch.
Information from the switch allows
the INTUITY AUDIX system to react to telephone calls that arrive on
analog voice ports. Depending on the information received, the INTUITY
AUDIX system plays a greeting, provides an automated attendant, permits
a subscriber to retrieve messages, or directs unanswered incoming telephone
calls to the correct mailbox.
The INTUITY AUDIX system also sends
information back to the switch. This information tells the switch to
update message waiting indicators (MWIs) or to transfer the telephone
call to another extension.
If the INTUITY AUDIX system does
not receive information from or send information to the switch, it is
nonintegrated. If the system is nonintegrated, callers must enter the
extension number for the mailbox or service that they want to reach.
Also, they cannot transfer through the INTUITY AUDIX system to another
extension. When the link between the switch and the INTUITY AUDIX system
is down, calls will still cover to the INTUITY AUDIX system, but the
calls are treated as nonintegrated calls.
Integration Types for DEFINITY
Communications Systems
The INTUITY AUDIX system uses different
types of switch integrations for different types of switches. For DEFINITY
Enterprise Communications Server (ECS) switches, an INTUITY AUDIX
system can use one of the following integrations:
- LAN link
- Mode code (inband) communication
The INTUITY AUDIX system supports
the use of only one type of switch integration on a single INTUITY AUDIX
system at a time, although the DEFINITY ECS switches can support more.
LAN Link
The LAN link allows the DEFINITY
ECS and S8300 and the INTUITY AUDIX system to communicate over a private,
dedicated LAN or by using a customer's LAN. The DEFINITY ECS is a server,
and the INTUITY AUDIX system is a client that always initiates the communications
session. This link uses a LAN circuit card installed in the INTUITY
AUDIX system and a C-LAN circuit pack (TN799 or later) installed in
the DEFINITY ECS. The two systems use TCP/IP and a specialized DEFINITY
protocol to communicate.
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Note: To use the LAN
link, the DEFINITY ECS must be Release 7 or later and equipped
with a C-LAN circuit pack (TN799 or later). The INTUITY AUDIX
system must be equipped with a LAN interface card.
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Mode Code (Inband)
The mode code (inband) link allows
the INTUITY AUDIX system and a DEFINITY ECS to communicate by using
the same analog telephone lines that connect the two systems for call
answer and message retrieval. This integration uses touchtone signaling,
call-progress signals, and switch hook flashes over the ordinary Tip
and Ring analog wiring to transfer information about the telephone call
between the two systems. This integration does not require a separate
signaling link as needed for LAN integrations.
Features Overview
The table for Comparison
of Integration Types summarizes the features available with the
different types of integrations for DEFINITY systems.
Table: Comparison of Integration Types
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Function
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LAN
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Mode Code
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Mode Code Notes
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Connection Information:
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Calling Party ID
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Yes
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Yes
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Called Party ID
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Yes
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Yes
|
|
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Internal vs. External Call
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Yes
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Yes
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Can provide internal and external personal
greetings.
|
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Direct vs. Redirected Call
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Yes
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Yes
|
|
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Busy vs. No Answer
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Yes
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No
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Cannot provide personal greeting for busy/no
answer.
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Call Disconnect Message
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Yes
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No
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Mode Code uses "wink" online.
|
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Distributed Communications Networking
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Yes
|
No
|
|
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MWI Control
|
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Message Waiting Indicator (MWI) Status
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Yes
|
No
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Cannot provide "Integrated Notification" of
new messages in other services, such as Message Center or LWC
on switch.
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MWI On/Off
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Yes
|
Yes
|
|
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MWI Audit
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Yes
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No
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Can refresh one at a time.
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Transfer Type
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Transfer Out of AUDIX
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Enhanced
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Basic
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Basic transfer through switch-hook flash.
Possibility of toll fraud (see the note at the end of the table.
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Transfer Into AUDIX
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NA
|
NA
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Functionality is provided by switch.
|
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Maintenance Features:
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Call Screening/Bridging
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No
|
No
|
|
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*R for Call Answer
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Yes
|
Yes
|
|
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Busy Out Voice Ports
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Yes
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No
|
|
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"Link Alive" Messages
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Yes
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No
|
|
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Time of Day Clock Sync
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Yes
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No
|
|
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DCS Transparency
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Yes
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No
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Future work for Mode Code switches.
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Digital Networking
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NA
|
NA
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Not dependent on switch integration.
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| Note: With Basic Transfer, calls transferred to the switch
look like direct calls from the INTUITY AUDIX system. They follow
the switch's coverage path for the transfer-to destination. With
Enhanced Transfer, the INTUITY AUDIX system provides the original
calling and called party information, along with an indication of
whether the switch should allow the call to follow the coverage
path for the destination endpoint. Since basic transfer does not
provide this information, it can potentially increase the risk of
toll fraud. Always monitor your system for evidence of toll fraud
and take corrective action immediately if you suspect that there
could be a problem. |
Distributed Communications
System Operations
The INTUITY AUDIX system can work
with a maximum of 20 DEFINITY switches if the switches are connected
in a Distributed Communications System (DCS) network. A DCS network
is an arrangement that allows multiple switches in the same or remote
locations to work together as one switch. To make DCS networking operate,
switches share the same uniform dialing plan and send call information
over signaling links between the systems. The following table lists
the types of connections possible with each DEFINITY model and adjunct
endpoints.
Table: Comparison of Connection Types and Supported
Endpoints
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DEFINITY ECS Model
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Connection Type
|
Endpoint
|
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R7csi and later
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Ethernet
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CMS, INTUITY AUDIX System, DCS
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R7si and later
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Ethernet
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CMS, INTUITY AUDIX System, DCS
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R7r and later
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Ethernet
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CMS, INTUITY AUDIX System, DCS
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In a DCS network, extensions on
the local switch receive telephone calls from remote extensions as if
the remote extension were on the local switch. Callers receive names
or extensions on their displays and can use some of the features on
the remote switch.
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Note: Detailed examples
of the following types of DCS networks include:
- Traditional
- D-channel (private
network only and public network access and or egress)
- Integrated (private
or public networks)
See DEFINITY ECS Administration
for Network Connectivity, 555-233-501 or 555-233-504, for descriptions
of these types of networks.
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General DCS Communications with
an INTUITY AUDIX System
In a DCS network with a INTUITY AUDIX
system, the INTUITY AUDIX system connects directly to only one switch.
That switch is referred to as the host switch, and all other switches
in the DCS network are remote. In this topic, the host switch is assumed
to be a DEFINITY ECS R7 switch or later. Remote switches can be different
releases of the DEFINITY switch product line, and the switches can be
in the same or a different geographical location. A remote switch does
not need to have a direct data link connection to the INTUITY AUDIX
system to use the INTUITY AUDIX system.
DCS Networking with a LAN Link
Between the Host Switch and the INTUITY AUDIX System
When a LAN link is in use between
the host switch and the INTUITY AUDIX system, the DCS network can use
a LAN link to the remote switches from the host. Each remote switch
is associated with an internal, administrable TCP port on the host switch
so that the host switch can provide gateway services. Gateway services
convert the protocols used in other DCS connections to a protocol that
operates with the LAN link. Because of the protocol conversion, earlier
version switches that operate with other protocols can remain in a DCS
network and use existing connections if the DEFINITY ECS R7 or later
is equipped with a TN577 Packet Gateway (r) or TN765 Processor Interface
(si) circuit pack. If the DEFINITY ECS R7 or later does not have these
circuit packs installed, DCIU connections in an existing DCS network
need to be removed and replaced with LAN connections by using the C-LAN
(TN799 or later) circuit pack.
The INTUITY AUDIX system on the
host switch has separately administered logical channels to each of
the supported remote switches mapped to TCP ports on the host switch.
This administration allows the INTUITY AUDIX system to communicate with
the remote switches.
The LAN integration into a DCS network
allows the INTUITY AUDIX system to support a total of 20 DCS switches.
The switch number must match the number assigned on the DEFINITY ECS.
All INTUITY AUDIX system features can be activated from both the host
and remote switches.
In a network in which a remote switch
is connected to the host by a LAN link, the INTUITY AUDIX system can
send message-waiting indicator (MWI) information directly to a remote
switch over the LAN. All other information, however, must be sent through
the host switch.
LAN Link Connectivity
The LAN link integration requires
use of an Ethernet connection to the DEFINITY ECS. The initial release
of the integration over the LAN link supports 10baseT (10 Mbps) connectivity
only. The INTUITY AUDIX system can be connected in a public network
or a private network.
Use of the C-LAN Circuit
Pack (TN799 or Later) with the INTUITY AUDIX System
The DEFINITY ECS R7 or later can
support two C-LAN circuit packs. Each C-LAN circuit pack (TN799 or later)
can support 17 ports per circuit pack. Of these ports, only one port
supports an Ethernet connection required for use with the INTUITY AUDIX
system. The INTUITY AUDIX system LAN link does not operate with the
synchronous point-to-point protocol (PPP) provided by the other ports.
The other ports can be used for other DEFINITY ECS switches for PPP
connection as a part of a DCS network.
DEFINITY TCP Ports
The DEFINITY ECS relies on internal,
administered TCP ports to process the information being sent to and
from the INTUITY AUDIX system. The main DEFINITY switch on the LAN should
use TCP Port 5002 as the port to the INTUITY AUDIX system. If the system
will be part of a DCS network using TCP/IP, then each additional switch
containing a LAN card must be assigned a TCP port number in the range
from 5003 to 5999. For non-IP remote switches, the same host switch
will act as the gateway, and a TCP Port number in the range from 6001
to 6999 must be assigned for each switch.
LAN Connectivity Methods
The LAN link connectivity will be
done in one of several ways:
- A direct connection from
the INTUITY AUDIX system's LAN circuit card, by using a crossover
cable, to the C-LAN circuit pack (TN799 or later) installed in the
DEFINITY ECS
- One connection from the
INTUITY AUDIX system's LAN circuit card, through a dedicated 10baseT
Ethernet hub, to the C-LAN circuit pack (TN799 or later) installed
in the DEFINITY ECS
- One connection from the
INTUITY AUDIX system's LAN circuit card to the customer's LAN and
a separate connection from the customer's LAN to the C-LAN circuit
pack (TN799 or later) installed in the DEFINITY ECS
All of these configurations support
the use of DCS networking.
Direct Connectivity
The INTUITY AUDIX system can be
connected to the DEFINITY ECS by using a simple crossover cable. See
the figure for Direct Connectivity for
an example. On the INTUITY AUDIX system side, the connection is from
the LAN circuit card to the hub. On the DEFINITY ECS side, the connection
is from the C-LAN circuit pack (TN799 or later) to the hub.
Dedicated Hub Connectivity
The INTUITY AUDIX system can be connected
to the DEFINITY ECS by using a dedicated�10baseT hub. See the figure
for Dedicated Hub Connectivity. On the
INTUITY AUDIX system side, the connection is from the LAN circuit card
to the hub. On the DEFINITY ECS side, the connection is from the C-LAN
circuit pack (TN799 or later) to the hub.
Customer LAN Connectivity
The INTUITY AUDIX system can be connected
to a router on the customer LAN. In this configuration, the DEFINITY
ECS C-LAN circuit pack (TN799 or later or TN799B) is also connected
to the customer LAN. See the figure for Customer
LAN Connectivity.
DCS Connectivity
The INTUITY AUDIX system can be connected
for use with a Distributed Communications System (DCS) network either
directly to the LAN or to the host switch through the LAN. The INTUITY
AUDIX system is associated with the host switch because of the voice
ports connected between the systems and the hunt group on the host switch
that redirects calls to those voice ports.
In the network, only a DEFINITY
ECS that is connected to the INTUITY AUDIX system on the LAN and configured
to provide gateway services can serve as the host switch. Gateway services
allow DCS networking operations with remote switches connected to the
host through the LAN links, therefore making it unnecessary to connect
remote switches to the LAN. Gateway services also provide translation
and forwarding facilities on separate TCP logical ports on the host
DEFINITY. The TCP logical ports are administered on both the INTUITY
AUDIX system and the DEFINITY ECS.
If another DEFINITY ECS in the DCS
network is connected to the LAN, the DEFINITY ECS can receive MWI updates
directly from the INTUITY AUDIX system over the LAN. However, it must
receive messages from the INTUITY AUDIX system through the host switch
for all other activities.
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Note: This topic does
not take into account administration of the DEFINITY ECS in an
Expert Agent Selection (EAS) environment. Contact the Design Center
for assistance in planning a system by using either of those two
features.
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Analog Connectivity
Analog connectivity involves the
wiring from the DEFINITY analog ports to the INTUITY AUDIX analog ports.
This wiring carries the voice and multimedia components of messages
that are either coming into or leaving the INTUITY AUDIX system.
Use of DEFINITY ECS Circuit
Packs That Do Not Support the INTUITY AUDIX System
Do not use the following DEFINITY
circuit packs for analog ports connected to the INTUITY AUDIX system:
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Use of the following circuit packs will cause the integration
to fail.
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- TN746
Do not connect the voice
ports to TN746 circuit packs. The TN746 circuit pack uses 24 Volts
and does not work. Connection to the TN746 causes the INTUITY AUDIX
system to go into alarm. The INTUITY AUDIX system requires 48 Volts,
which is supplied by the TN746B circuit pack.
- TN793 vintage 5 or earlier,
or TN793B vintage 3 or earlier
Do not connect
the voice ports to these vintages of the TN793 or TN793B circuit packs.
These circuit packs have a problem related to neon message-waiting
lamps (causes electrical damage) and cut-through timing (results in
possible toll fraud issues). Later vintages of these circuit packs
will work.
Use of DEFINITY ECS Circuit
Packs That Support the INTUITY AUDIX System
The following analog port circuit
packs support the INTUITY AUDIX system:
- TN746B vintage 10 or later
- TN742 vintage 10, 17, 18
and 19 only
- TN793 vintage 6 or later
- TN793B
Simultaneous Ringing Considerations
Each analog circuit pack supports
8, 16, or 24 analog voice connections. Depending on the circuit pack
and the required number of voice ports, you might need to spread out
the voice port assignments over more than one circuit pack. For example,
if you are using a�16-port circuit pack, use no more than 4 ports of
circuits 1–8 and 4 ports of circuits 9–16 on that circuit
pack. If you still need more INTUITY voice ports, select a circuit pack
that is at least one-quarter carrier distance away from the first circuit
pack.
For example, if your system has
12 voice ports and you assign the first 8 ports to the circuit pack
in slot 3, assign the other�4 voice ports to a circuit pack in slot
7 or higher. See more about circuit pack characteristics in the DEFINITY
ECS System Description.
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Failure to adhere to these considerations can result in ring blockage
on the INTUITY AUDIX system.
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Voice Port Connectivity
Use ordinary Tip and Ring analog
wiring to connect the messaging system to the switch. See Adding
a New Analog-line Voice Card for information.
Installation Considerations
Before installation, make sure that
the installer has all of the necessary information and that the demarcation
for the LAN is clearly understood.
LAN Information Needed for
the Installation
Complete the planning worksheets
in Switch Integration Planning before
the installation. Completing the basic planning worksheets ensure-that
the installer has all of the needed information. Some of the information
needed includes:
- How the connection is being
made from the INTUITY AUDIX system to the switch:
- Private LAN, no connectivity
to customer LAN (uses private LAN addresses):
- Preferred option,
most robust and reliable, no dependency on customer's network.
- Crossover cable used
for ease of connections.
- Hub can be used instead
of crossover cable to extend distances, if desired; up to four
hubs can be used.
- Customer LAN with private
segment:
- Preferred option when
Avaya INTUITY Message Manager is needed.
- Uses switch or router
to provide a private collision domain.
- Minimal dependency
on customer's network.
- Customer must provide
equipment and administer network for private segment.
- Customer LAN administrator
must be present during setup.
- Direct connect to Customer
LAN, without private segment:
- Least preferred option.
- Complete dependency
on performance and reliability of customer's LAN.
- Allows remote location
of endpoints when customer LAN connectivity is convenient.
- Customer LAN administrator
must be present during setup.
- If option b or c is chosen,
the following information is needed from the customer:
- Customer network physical
connectivity questions:
- Location of 10BaseT
network access point (hub, router, and so on).
- Distance between C-LAN
and network access point (328 ft., 100 m maximum).
- Wiring to access point,
existing or new, Category 3 minimum required.
- Customer network administration
questions:
- Sanity check of information
obtained from customer:
- If C-LAN and adjuncts
are on the same LAN segment:
- Gateway IP address
and subnet mask information is valid.
- All IP addresses contain
the same subnet address.
- If C-LAN and adjuncts
are on different LAN segments, gateway IP addresses are different.
Without the above information, the
Avaya technician will be unable to complete the installation. Installations
that require the technicians to return because information was not available
incur additional charges.
LAN Connectivity Demarcation
Avaya service technicians dispatched
for INTUITY AUDIX system installation and maintenance might not troubleshoot
the customer's LAN. The demarcation point for the INTUITY AUDIX system
connected into the customer's LAN is the back of the LAN connection.
The LAN cable, the connector at the end of the cable for
connection to the INTUITY AUDIX system, and LAN administration not performed
on the INTUITY AUDIX system are the responsibility of the customer unless
specified by contract. After the system is placed into service,
the customer is responsible for maintaining the IP addresses and administering
on the INTUITY AUDIX system, unless otherwise specified in the contract.
