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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 |
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