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If you wish to gain more information about the REMOBS system, Teltone
Corporation can be written to at 10801 - 120th Avenue N.E., Kirkland, WA 98033
or phoned at (206) 827-9626.
______________________________________________________________________________
==Phrack Inc.==
Issue XIV, File 5 of 9
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
|_| |_|
|_| Understanding the Digital Multiplexing System |_|
|_| Part II |_|
|_| |_|
|_| by Control C |_|
|_| |_|
|_| An Advanced Telecommunications, Inc. Production |_|
|_|_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _|_|
|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
DMS switches were first introduced in 1979. Since then it has been modified
to interface with numerous types of switches. DMS has the ability to
interface with SP-1, #5 XBar, 1ESS, 2ESS, 3ESS, 4ESS, NX1D, NX1E, TSD, SXS,
ETS4, NO. 1 EAC, NO. 2 EAX, NO. 3 EAX, TSPS, CAMA/3CL boards, Stromberg
Carlson Turret of ONI and Visual Indicators, Modified North Electric TSD for
ONI, Stomberg Carlson (CAMA operator Position - ONI/ANI), AE #31 Switchboard,
Co-located NT/AE switchboard I/C, O/G, UDC data poller of OM, DACS (Directory
Assistance Charging System), NT #144 LTD, WECO #14 LTD, WECO #16 LTD, CALRS
(Centralized Automated Loop Reporting System), Badger 612A, AE #1 and #21 LTD,
AE #30, SC #14 LTD, Lordel MITS70 line Test System, Porta System Line Test
Unit, Pulsar II IMTS, Teradyne loop test unit, and the WECO MLT 1 (Mechanized
Loop Testing System).
Common Channel Interoffice Signaling
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Common Channel Interoffice Signaling (CCIS) is a way of signaling and a way of
implementing network level services. CCIS provides reliable, crystal clear
data signaling links between the network and the switching offices. The CCIS
signaling method uses transmission equipment that is separate from voice
trunks.
Common Channel Interoffice Signaling No. 6
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The basis for the CCIS system is the International Consultative Committee on
Telephone and Telegraph (CCITT) No. 6 international standard, which is brought
to its fullest capacity for use in the Stored Program Control (SPC) network of
AT&T.
The CCIS6 network contains a bunch of signaling regions, each having a pair of
interconnected Signal Transfer Points (STP). The switching systems put into
CCIS6 that connect to STPs are called Serving Offices (SO).
Band Signaling (CCIS-BS) is used on trunk signaling for intertoll-type trunks
using the CCIS network.
Direct Signaling (CCIS-DS) is used for signaling between SPC switching
machines and a Network Control Point (NCP). At the present time, CCIS6 can
handle Enhanced INWATS Originating Screening Office (OSO), Calling Card
Validation (CCV), Mechanized Calling Card Service (MCCS), and Billed Number
Screening (BNS). CCIS6 is available with DMS-100/200, DMS-200, and
DMS-100/200 or DMS-200 with TOPS.
CCIS6 Diagram:
NSB ST
------------ - - - - - - - - - - -
DTC | | | ------- |
- - - DS30 | IPML | DS30 | - - - | || | |
--------| |------|- - - - - - |------|-| |---| || | |
Digital - - - | | | - - - | || | |
Trunks | | | | || | |
| | | ------- |
| | - - - - - - -|- - - -
DTC | | TM |
DIG - - - DS30 | NUC | DS30 - - - -----
--------| |------|- - - - - - |--------| |----| |
^ - - - |Network | - - - -----
CCIS \ ------------ Modem
Signaling \ |
- - - -----
AN Links--| | | CCC |
- - - -----
Channel
Bank
Acronyms:
DIG - Digital
AN - Analog
DTC - Digital Trunk Controller
MSB - Message Switch Buffer
ST - Signaling Terminal
TM - Trunk Module
NUC - Nailed-Up Connection