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-
- -=- The Empire Times -=-
- Issue 5, File 2 of 8
- DMS Family of Digital Switching Systems
- by Erudite
-
- In this Infoarticle I hope to cover the capablities and flexabilities of
- all the DMS Digital Switching Systems, I will also talk about other
- Northern Telecom Devices and Systems. The majority of the file is based
- on the DMS-100 system.
-
- First we have breif descriptions of the DMS Switches:
-
- DMS-10
- ------
- This is a versatile switch which is cost-effective for the duties that
- it was created for. It is a digital switch that services suburban and
- rural areas. It is in service internationally as well as in the US
- (rural and suburban areas). It allows access to local and long-distance
- service. It can handle up to 12,000 subscribers. It is the smallest of
- the DMS family.
-
- DMS-100
- -------
- The purpose of the DMS-100 Switch is to provide coverage and connections
- to the public network. It is designed to deliver services over subscribers
- lines and trunks. It provides POTS (Plain Old Telephone Service), along
- with very sophisticated business services such as ACD (Automatic Call
- Distribution), ISDN (Integrated Service Digital Network), and MDC (Meridian
- Digital Centrex).
-
- DMS-200
- -------
- The DMS-200 switch has toll capabilities, it is used for toll-center
- applications. It provides TOPS (Telephone Operator Position System) which
- is the world's premier operator service, from Northern Telcom.
-
- DMS-100/200
- -----------
- Simply, this combines the DMS-200 Toll capabilities and applications, with
- the DMS-100 public networking, which makes it possible for this switch to
- service subscriber lines, long distance circuits with toll applications.
-
- DMS-250
- -------
- This is the long distance tandem switch that connects long distance calls.
- It is used by the interexchange carriers. It is powerful, and they are
- used to connect most of the U.S. population.
-
- DMS-300
- -------
- This is the international exchange, which gates calls internationally.
- It provides the most advanced range of international services. This
- international digital switch can interface with almost *any* country in
- the world. Talk about power. It is known as the International Gateway
- System.
-
- DMS-Supernode
- -------------
- This is faster, and can handle more throughput that the DMS-100.
-
- DMS-Supernode SE
- ----------------
- This is a reduced size Supernode system, it has a DMS-Core processing
- engine, DMS-Bus high-speed messaging component, the Link Peripheral
- Processor (LPP), and the Enhanced Network non-blocking switching network
- (ENET), which makes it a cost effective system, combined all into one
- compact unit.
-
- DMS-MTX Cellular Switch
- -----------------------
- Northern Telcom's Cellular Switch. The DMS-MTX was the first cellular
- switch in Northern American to offer subscribers.
-
-
- DMS Architecture & Functionality
-
- Messaging - "DMS-Bus" is the high speed data bus connecting most components
- of the switch. This makes the DMS-Supernode system a true step up
- communications platform.
- Switching - The switching matrix calls to their destination. Currently
- in planning is future switching fabrics that will allow for broader
- data applications, including (ATM) Asynchronous Transfer Mode.
- Maintenance & Billing - The DMS Systems provide full feature testing, and
- other transaction and maintenance procedures.
- Multicomputing platform - The DMS systems enables a high capacity, and other
- "information" age applications and functions. Such as Videoconferencing,
- transmission of imaging, and dialable ds-1 backup.
-
-
- DMS Family Setup
-
- Below will be a simple, common setup of dms systems to form a wide range
- communications system.
-
-
-
- DMS-100 ----------------- DMS-200 ----------------- DMS-250
- (end office) /(Tandem office) (ld services)
- / |
- / |
- / |
- / |
- / DMS-300
- DMS-Supernode ---------- DMS-100 (int services)
- (maint,billing) / | \ |
- (subscriber lines) |
- +--- International
- Gateway
-
- DMS Applications and Markets
-
- Switch Application Class Market
- ------- --------------------------- --------- -------------------------
- DMS-100 End Office 5 Local Exchange Carriers
- DMS-200 Toll Office 4 Local Exchange Carriers
- DMS-
- 100/200 End Office/Toll Office 5 Local Exchange Carriers
- DMS-250 Tandem Toll Center 4,3,2,1 Interchange Carriers
- DMS-300 International Gateway CTI-3,CTX Int. LD Carriers
- DMS-MTX Mobile Telephone Center Cellular Servers
- Meridian
- ACD Srvr Adjunct ACD Switch Local Exchange Carriers
-
-
- Refrences: The DMS100 Advantage (nt)
-
-
-
-