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Distributed Communications System
The Intuity AUDIX system can serve more than one switch when the switches are part of a distributed communications system (DCS) network. These include:
Description
The DCS network feature on Avaya switches allows multiple switches to work together as one switch. The switches can be in the same location or distributed between sites. All switches in a DCS network share the same uniform dialing plan. Switches share call information over a DCIU link. Subscribers receive calls from remote subscribers as they would receive calls from their local switch. The switch sends caller names or extensions to the subscribers' telephone displays and can use leave-word calling and other switch features.
The DCS feature package allows a single Intuity AUDIX system to integrate with up to 20 of the switches on the DCS network. The DCS feature package provides called-party information to the Intuity AUDIX system from all the switches on the DCS network.
If a customer has a DCS network, subscribers—regardless of location—can include each other on mailing lists, forward and reply to each others' messages, and have calls routed to them efficiently and accurately.
Host Switches
The switch that hosts the Intuity AUDIX system connects it to the other switches in the network. The system uses the existing DCS trunks of the switch for both data and voice communications. The following switches could be the host and/or a remote switch for the system in a DCS environment:
Configuration
There are two possible configurations for a system in a DCS network:
Operation
How DCS Networking operates on a system depends on the DCS configuration.
DCS Configuration Using BX.25 Data Channels
One system residing on a switch can support up to 20 remote switches in a DCS network. A remote switch does not have a direct data link connection to the system. The remote switch passes data through the host switch to the system through a channel over the DCS BX.25 data link. The Intuity AUDIX system on the host switch has separately administered channels to each of the supported remote switches. These hop channels, provided by the host switch, are used to control message waiting indicators (MWIs) and to identify remote switches to the system. The host switch then provides the voice port and system connections for all switches in the DCS network that communicate with the system on the host. All Intuity AUDIX system features can be activated from both the host and remote switches.
The remote Intuity AUDIX system hunt group can be a coverage point in a call coverage path at a remote switch not connected directly to the system. The remote switch must be in the DCS network.
DCS Configuration Using ISDN-PRI
D-Channel (DEFINITY G3i, G3r, G3s,
and G3vs only)This configuration uses BX.25 connectivity between the Intuity AUDIX system and the host switch. The ISDN-PRI connectivity is used between the host switch and the remote switches in the DCS network. This configuration requires the same hardware as the DCS Over ISDN-PRI D-channel feature. Intuity AUDIX system messages are transported to the remote switch via administered non-call-associated temporary signaling connections (NCA-TSCs) between nodes supporting ISDN-PRI D-channel. An administered NCA-TSC is established between two administered NCA-TSC endpoints on two different PBXs and remains up or enabled for a period of time depending on administered translations. The connection may be administered on an as-needed or permanent basis.
These same configurations are available on the remote switch. See "DCS and AUDIX Networking" in DEFINITY Enterprise Communications Server R6 Administration and Feature Description, 555-230-522, for detailed examples of DCS in the following configurations:
- Traditional DCS network
- D-channel DCS network (private network only)
- D-channel DCS network (public network access/egress)
- Integrated DCS network (private network only)
- Integrated DCS network (public network access)
Requirements
All the Intuity AUDIX system platforms support DCS networking. DCS networking requires the base platform configuration with switch integration and the associated software package.
For U.S. customers, the Sales and Design Support Center (SDSC) designs a multinode DCS arrangement with a Intuity AUDIX system. The International Technical Assistance Center (ITAC) provides this service for customers in other countries.
Connectivity
The figure shows the connectivity for providing Intuity AUDIX Voice Messaging transparency in a DCS network. Click to view the High-level DCS Connectivity with a Intuity AUDIX System. The connectivity consists of a single Intuity AUDIX machine connected to multiple switches via a host or gateway switch. The voice lines to and from the Intuity AUDIX system all terminate in an Automatic Call Distribution (ACD) group on the host switch. Thus, the host switch is a tandem point for all voice connections between the Intuity AUDIX system and the other remote switches in the DCS arrangement. The DCS tie trunks provide voice lines between the host switch and the remote switches.
In a DCS network, logical channels on the physical link provide connectivity for the transmission of voice messages between the switches and the Intuity AUDIX system. The DCIU on the host switch is used for these communications. These logical channels are rerouted from the host switch to each of the remote switches. Thus, logical paths can be established between each switch and the Intuity AUDIX system:
http://www.avaya.com Avaya UCS Information Development |
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