Glossary - Abbrevations and Descriptions 1.0 ^ By Inferno and Sire 1996..
To Contact The Med Call The Med Whq cORRUPTiON On +44 NOT-4-YA
The following is a list of abbrevations and their descriptions, the file is not finished in any respects and I shall be updating it in the future.. at the moment, in only deals with the System X switch (`SYS-X') because i don`t have enough infomation on AXE10 to compile much about that.
input to the compiler.
DCCE S-X Digital Cell Center. This is an exchange that :
high telephone density local network which performs a tandem switching function, but has no customer connections. DLS S-X Digital Local Switching Unit. General term for Digital Local
Processor Exhchange. It provides service for it's customers. It can also provide other facilities dependaent on it's role as either a DCCE or DLE. DLE Digital Local Exchange. This is a DLSU which may host RCUs as in
as an International Gateway Exchange. DMSU S-X Digital Main Switching Unit. Provides a fully interconencted Trunk
Network. Each DMSU catchment area will compromise of several old GSC areas. The DMSU will switch traffic bother between and within the catchment area. DMU Dialled Meter Unit. DN Directory Number DPC Destination Point Code DPLE Digital Principle Local Exchange. Main exchange for an area. DS3 Digital Subscribers Switching Subsystem. This is in principle the
same as the RCU yet it is situated inside the exchange - both are usually called subscontractors. It is used to connect subscribers to the local exchange. They are connected via PCM links. DSG District Support Group (BT District Staf) DSS S-X Digital Switch Subsystem. The DSS carries out all the switching
functions on a System X exchange - Trunk or local. DSSS S-X Digital Subscribers Switching Subsystem. See DS3. DSW D-Switch DWI Display Work Instructions - A common found trash.
generally 17x) number and replace handset, upon ringback the service should provide a quick analysis of any problems.
manual service. Within ISIS it is possible to find infomation through indexing. Coding is AAA/BBB/Cxxx. AAA = Discipline, BBB = Main Subject, C = Tertiary Function/Specialism, xxx = document number. AAA - listing approx 30 disciplines eg, Personal, Transmission, Operator Services, Customer Services etc.. BBB - Listing approx 150 main subjects within the respective disiplines eg Employment, Optical Fibre systems, Operating procedures etc.. C - Listing approx 500 functions of specialisms within their respective main subjects. E.g Recruitment, Planning & Implentation etc.. EXAMPLE = CSS/CCS/C010.. installation practice for mini master 3 ISOS In Service Operational Support (Manufactures Staff). The ISOS
would be called in when an urgent problem needs a higher level of support, or if a major service failure occours they can be called in quicker than the PSG.
sure all tasks and routines have been carried out. MCS S-X Maintenance Control Subsystem. Carries out maintenance functions. MDF Main Distribution Frame MED Possibly the best H^P group in the world. :) MEER Miscellaneous Electronic Equiptment Rack MFX MF4 Test Auxiliary Board MLE Medium Local Exchange. MMI Man-Machine Interface MMIS Man-Machine Interface Subsystem. The MMIS allows engineers to
control and manage the exchange through VDT's etc.. MML Man-Machine Language MOJ Metering Over Junction MPCS Multi Party Connection Subsystem. The MPCS allows 3>10 subscribers
to be connected together at the same time. MPR Microprocessor MRA Malfunction Reporting Alarm MSS Management Statistic Subsystem. Keeps records of the junction
routes in the local exchange and keeps traffic records for DS3s and RCUs under it's control and also for the AAS. MTS S-X Message Transmission Subsystem. Terminal part of CCS (not to be
confused with CSS) link. It transmits and recieves messages sent between distanct CPSs (Call Processing Subsystems) and carriers out error checks on messages and re-transmits if necessary. MTS(MsgFor)The MTS message format is : - Error Check, Message, Routing label,
header. The header contains the message number incase a resend is needed, the routing label includes the OPC (Originating Point Code) which identifys the originating exchange and the Destination Point Code (DPE) which identifies the destination exchange. The message tells CPS what it has to do and the error check obviously checks the message for errors.
sys-x exchange. O/G Outgoing OIM Operation & Maintenance OCB Outgoing Calls Barred OMC Operations & Maintenance Center. BT policy requires this, collects
data from exchanges and monitors data for presentation for the OMC staff (Traffic, Sales, Operation & Maintenance Unit. (OMU) ) OMU Operation and Maintenance Unit. Room where engineers moniter the
performance of the exchanges, and recieve data collected my the OMC. There is one or more connected to each OMC. OMU staff can send data to the OMC to control the exchanges conneted to it. OOS Out Of Service OUC Organisational Unit Code
gives 240 speech channels (8x30) which are available to 2048 subscribers. PCS Subscriber's Private Circuit PDN Private Data Network PFT Pass Fail Thresholds PLEXUS/SDF Computer center with both ICL and PLEXUS systems PRAT Primary rate access terminal POE Path Of Entry TPOE Translation Point Of Entry PSG Product Support Group (BT Headquarters Staff). PSGs can be called
in if there is a problem on site. They give the authority for any emergency design modifications carried out without authority having being gained in advance. PSN Packet Switched Network PSTN Public Switched Telephone Network - The standard telephone service PSU Power Supply Unit PUS2 The Central Processor which provideds the processing power and
storage facilites for all other subsystems. PXSM Pre-Extension Site meeting
in a RCC. RCU Remote Concentrator Units. These must be connected to the DLSU and
are considered as part of the DLSU to which they are connected. The RCU is situated away from the Telecom building in a more convienient place and it is the apparatus that divides the lines and gives them their equiptment numbers. If there is no connection between the RSU and the exchange then customers may still call numbers controlled by the RSU but not outside. Charge Handling is handled at the TE so if there is no connection to the TE there is no call charge. Telecom uses a standard two RCUs for security reasons. RFA Ringer Fuse Alarm RTU Remote Terminal Unit
subscribers apparatus TOS (Temporalily Out Of Service). SALT Subscribers Automatic Line Testing. For System X and Y exchanges.
The code for this is generally 175 and has the same job as the FaultsMans Ringback but is more advanced with increased options after the ringback. SBR S-X ENS Exchange Subscriber SDP System data page SPM Customer's Private Meter SPU S-X Speech Interworking Unit. SIS S-X Signalling Interworking Subsystem. Used as an interface between a
System-X exchange and analogue exchanges. It convers analogue to 30 channel PCM for connection to the DSS. In like local exchange, unlike to trunk exchange it does not send tones or annoucments - the AAS does. SIU Slide-In-Unit STX Substitution Auxiliary
testing of all digital and analogue junctions and subcriber lines. It uses SIS to access analogue junction lines, DSS to access digital junctions and DS3 tto access subscribers lines. TOC Type Of Circuit Digits TOS Temporalily Out of Service TNC Test Network Controller TNO Test Network Operations TPN Telephony Process Number TSVC Telephone Service and Vechicle Centre TXD #'s A method of labeling types of exchange by number that forms part
of the exchange's Network Nodal Identity which appears on all documents specific to the particular exchange. TXD NO EXCHANGE 3 RCU (System X) 5 UXD5 6-9 DLSU (System X) 13 DMSU 14 DJSU 30 OSSU 31 OCHC 53 RSU (AXE 10 (System Y)) 56-59 DLSU (AXE 10 (System Y)) 80-86 OMC TXE Telephone eXchange Electronic.. most commonly in the form of a
TXE4, or TXE4A (cost reduced).
TXD exchanges in his OMC area and the organisation of staff. UXC Utilities Card UXD5 Digital Exchange developed from the CDSS1 (Monarch) PABX.
line gived number and code. There are possibly other systems under the heading VMS because it's not exactly very use specific.
infomation for jobs of the day. Generally used via a portable field terminal and acostic coupler. It is accessable from any termination point in England. WN Worldwide Networks WNI Worldwide Networks Intstruction