CHAPTER 8 – Routing 1

8.1 Objectives 2

8.2 Glossary 2

8.3 Introduction 3

8.4 CAS and CCS 8.4.1 CAS – Channel Associated Signalling 8.4.2 CCS – Common Channel Signalling

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8.5 DPNSS – Digital Private Network Signalling System 6

8.6 ISDN – Integrated Services Digital Network

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8.7 Routes, trunks, lines and direction 9-11

8.8 Initiation of Routes 8.8.1 The ROCAI (ROute Category Initiate) command 8.8.2 The RODAI (ROute Data Initiate) command 8.8.3 The ROEQI (ROute Equipment Initiate) command 8.8.4 The RODDI (ROute external Destination Data Initiate) command 8.8.5 Initiation of an ISDN route

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Chapter 8 – Routing

Normally the MD110 would not be found isolated with only internal traffic, there would be some way of communicating with the external telephony systems. This chapter describes some signaling systems used for external communications.

8.1 Objective

Describe CAS and CCS Define line, route, trunk individual, direction and external destination Know how to initiate a route

8.2 Glossary

APNSS Analogue Private Network Signalling SystemCAS Channel Associated SignallingCCS Common Channel SignallingCSI Call service InformationDID Direct In DialDPNSS Digital Private Network Signalling SystemDTMF Dual Tone Multi FrequencyECMA European Computer Manufacturers AssociationEOS End Of SelectionERWT Expensive route warning toneFRL Facility Restriction LevelISDN Integrated Service Digital NetworkLRC COS Least cost routing class of serviceMFC Multi Frequency CompelledPBX/PABX Private Branch eXchange/Private Automatic Branch eXchange PCM Pulse Code ModulationPNR Private Network RoutingPSTN Public Switched Telephone NetworkRTL Released Trunk LinkTCD Trunk Call DiscriminationTCM Travelling Class Mark TEI Terminal End-point IdentifierTNS Transit Network SelectionUUI User-User InformationUUS User to User Signalling

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8.3 Introduction

The MD110 cannot only set up a normal call between two users in the own exchange; it also has the possibility to communicate with other changes. When connecting the MD110 to external networks, there are many things to think of. E.g. are we connecting to older analogue or newer digital lines? A Public exchange is what a normal subscriber uses to communicate with other subscriber. It is often a quite limited in the number os services available. A private network consists of PABXs connected in the net. This net is usually connected to the PSTN (Public Switched Telephone Network). The private network can provide many functions, not available in the PSTN, to its users.

Private network connected to the PSTN

Private Network

8.4 CAS an CCS

Channel Associated Signalling, CAS an Common Channel Signalling, CCS, are two main principles used for signaling in telephony networks. They can be seen as the old (CAS) and the new (CCS) way of signaling, both in the sense that CCS protocols have a more comprehensive list of functionality but also in the fact that CAS tends to be analogue and CCS digital.

8.4.1 CAS – Channel Associated Signalling

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PSTN

The characteristic for CAS is that speech and signals travel the same way through the net. Some variation to this rule may occur.

Signalling is done on the same channel as the speech (e.g. DC signalling, in-band)The signalling is done on the speech channel, but in the different frequency range (out-band)Signalling is digital and carried out in time slot 16 (PCM signalling)

The way the signals are transferred varies, depending on the circuit and the transfer media. We will only mention three different ways.

DC signalling: Signals are transferred in pulse from by means of changes in polarity and resistance of the connecting wires.Tone frequency signalling: Tones of constant frequencies carry the information. Distinction is made, depending on the frequency bands, between:

In-band signalling, the signals lie within the 300-3400 HZ band.Out-band signalling, where the signalling uses higher frequencies that the speech band.

Digital signalling: On PCM connections, everything is ones and zeroes, no matter what being transmitted.

Channel associated signalling between exchanges is usually divede into line and register signalling.

Line signals are used for seizure, answer and clearing. They are used for monitoring of the line before, during and after the call set-up. Register signals are used to transmit the called number.

Line signalling Register signallingInformation Qty Small Large Transfer rate (required) Low HighSignalling period Long ShortUsed during The whole call Call setupNumber of units (equipment) Large Small

Line signals are needed during the whole call while register signals are used only during call set-up. By dividing the signalling equipment into register and line signalling equipment, and using the more complex register equipment only while the address information is transmitted, one register equipment may be used to serve many lines.

8.4.2 CCS – Common Channel Signalling (ISDN)

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In CCS the signals travel their own way though the net, independent of which way the speech goes. The bearer of the signals can be seen as a network in itself, separated from the network that transfers the speech.

In CCS we no longer need to worry about the more or less sharp distinctions between register and line signals that we had in CAS.

Signalling network.

Because the total time for signaling is very short, compared with the average call time, we can let a single, common signalling channel take care of all signalling for thousands of calls. This means that all traffic can share a common signalling device.

8.5 DPNSS – Digital Private Network Signalling System

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SIGNALLING NETWORK

SIGNALLING NETWORK

DPNSS is a signalling system for signalling between exchanges in a private network. Common channel signalling is used.

It is quite old digital signalling system, first developed in Great Britain for the national telephone network. It was further developed later for use in international networks.

Since DPNSS uses CCS, the signalling is separated from the speech transmission. All signalling is transferred in timeslot 16.

A special kind of DPNSS, called Analogue DPNSS or APNSS, exist. It is used when facilities via the network are needed but where traffic between to exchanges is so low that subscription of a 2048 kbit/s digital interface is not economically motivated, or where only an analogue network is available. Thus the same facilities can be offered irrespectively of whether the network is digital or analogue.

In APNSS the speech and signalling are also physically separated. All signalling, such as connections, disconnections and digit transmission, will take place via modems instead of in time slot 16 in the digital connection. An interface board with V.24 interface has been developed for connection to modems.

APNSS

Modem

Signalling

Speech

Speech transmission will take place via separate wire pairs on conventional analogue tie lines. These tie lines are not used for any signalling, only speech travels on them.

8.6 ISDN – Integrated Services Digital Network

ISDN may be seen as a logical progression of the digitalization of the telephone network

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and the development of digital data networks. It originated from a vision of development towards one network that was able to handle several different types of communication services; speech, data, text and pictures.

Evolution towards ISDN

IDN = Integrated Digital Network

Data network and digital telephone networks are known as integrated Digital Networks, IDN. Integrated, in this context, stands for integrated switching and transmission.

The network carries the digital channels all the way to the user. The interface to the user provides multiple services and allows any type of terminal to be connected to the network.

Different type of channels exists, with different transfer speeds. Common channels are the B-channel (64-kbit/s) and the D-channel (16/64-kbit/s). The B-channel is used for data communication and 64 kbit/s coded telephone. The D-channel is intended primarily for signalling. When it is not used for signalling, it can be used for data traffic.

ISDN user configuration

S T U

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AnalogueTelephoneNetwork

IDN for telecommunication

IDN for data telecommunication

ISDN

ISDN Networ

k

ISDN Networ

k

TE1 NT2 (PBX)

TE2 TA

NT1

NT

Q R

R, S, T, U and Q are reference points in the network where different interfaces are specified.

R – The reference point for connection of a TA for non-ISDN terminals to the ISDN.

S – The subscriber reference point for a Basic Rate Access (2B+D) to the ISDN.

T – Reference point for the connection of a Primary Rate Access (30B+D).

U – The reference point for connection between the ISDN exchange and a NT.

Q – The inter-PBX reference point to which a PBX is logically connected.

The NT is the system block that is used for connection to the ISDN.

In the figure above, a PBX acts as an interface between the NT and the ISDN exchange. Because the PBX can hold some of the functions of the NT, the NT split into two parts, NT1 and NT2 (the PBX).

The MD110 is an ISDN PBX that can handle the functions of both NT1 and NT2. it is then called NT12. It provides its extensions user access to the ISDN.

8.7 Routes, Trunks, Lines and directions

Traffic between an MD110 PBX and a public exchange/inter-working exchange requires a line.

TE Terminal, e.g. telephone or terminal for teletex. - TE1: Terminal type 1. A terminal provided with An ISDN interface. - TE2: Terminal type 2. Non-ISDN terminal.TA Terminal Adapter. Connects terminals of type 2 To the ISDN interface.NT Network termination. Forms a physical and Electrical termination of the subscriber line.

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PBX

Definition of trunk individual and line

TLU76/1 TLU76/1 Line (cable)

30 speech channel (30B+D in Europe)

Trunk Individual

A line is basically the cable between two PBX’s TLU-boards (e.g. TLU76/1). The line contains for example 30 speech channels or so called trunk individuals. One or several trunk individuals with the same characteristics from a route. Normally you have the 30 trunk individuals in the same route, so you can in that case say the line is equal to one route.

Route can be initiated with different categories, Such as signaling, service and traffic characteristics, to suit different types of external lines. Any route also goes either to the public or a private exchange. Another name for a Private route is Tie-Line.

To each route (or direction) that permits outgoing traffic one or more external destinations shall be affiliated. It is possible to initiate up to seven alternative route choices to one external destination.

Alternative Routes

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A day service and/or a night service position can be initiated (RODNI) to each incoming route or line, i.e. a common answering position for the route or individual for the line during day service and night service, respectively. An answering position for vacant numbers, to be used at incoming calls to vacant number, can also be initiated for each route. Furthermore, it is possible to assign customers their own day and night switching positions (ROCNI, customer-dependent rerouting positions).

Connection to the PSTN

There are many types of routes, each serving a different purpose.

Connection to the PSTN can be through:

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A-party

B-party PSTN

PABX

ROU=1 ROU=2 ROU=3

PSTN

PSTN

Routes

Direct In Dial, DID – Enables subscriber in the public network to dial a PABX extension directly, i.e. without assistance from the PABX-operator. Another term for this feature is DDI.

Integrated Service Digital Network, ISDN – A fully digital network, providing end-to-end digital transmission from the originator to final destination. The network supplies both voice and data application.

Ring In/Loop out – Used for testing a single LIM system. Loops the signals directly back to the LIM.

8.8 Initiation of routes

Although there are a large number of commands to be used when setting up network connections, the connection will be on the following commands:

ROCAI Sets up internal characteristics for the routes, e.g. traffic direction, services available, bearer capabilities.

RODAI Describes the protocol that will be used in this route.ROEQI Initiates individuals in the exchange that are to be connected to a route,

called trunk lines.RODDI Connects a route with a number that the subscriber will dial to reach the

external line (the destination code). Actions of the RO commands

RODDI ROCAI RODAI ROEQI Dest. code Inc./Outg./Bothway Type of signaling Trunks Signalling char. Variations on Equ.pos Services Traffic Bearer capabilities

8.8.1 The ROCAI (Route Category Initiate) command

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MD110

Route Internal

Characteristics

TL-BlockDest. Code

4 1 2 3

The first thing to do is to initiate a route with the command ROCAI. A maximum of 250 routes per LIM or 250 routes per system can be stated.

ROCAI:ROU=,SEL=,SIG=,TRAF=,TRM=,SERV=[,DIST=][,DISL=][,NODG=][,BCAP=];ROU = Route numberSEL = Selection categorySIG = Signalling categoryTRAF = Traffic categoryTRM = Transmission characteristicsSERV = Service characteristicsDIST = Disturbance timeDISL = Disturbance levelNODG = Market dependent parameterBCAP = Bearer capabilities

ROU This parameters states the route number.SEL States traffic routing characteristics such as:

Criteria for rerouting at DID traffic Traffic direction, i.e. whether the route is open for incoming

and/or outgoing traffic Line selection at outgoing traffic

SIG Set the signalling characteristics between a route in the exchange and a public/inter-working exchange. The following are interest:

Whether dial tone after seizure of the external line is to be generated in own or in cooperation exchange at outgoing call

Whether the route has a clear signal. Used to check if the parties are allowed to be connected. If both parties lack clear signal, the connection of the call is prohibited unless the call is extended and supervised by an operator.

When the switch shall be through connected. Type of signalling system i.e. DPNSS, ISDN, MFC or decadic

pulsing/DTMF. Whether net services are supported or not for DPNSS/ISDN

routes.TRAF States the route traffic category.

This could be a traffic connection class that states which A-parties and B-parties that may be interconnected with the lines in the route.

TRM Selects the transmission characteristics in the switch, namely amplification or attenuation.

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SERV Sets the route service category. The following are of interest: Whether the route is public or private. Used to provide correct

ringing signal and display message at the called party. Whether callback may be initiated to lines in the route.

DIST Sets the disturbance time for the route. Calls with duration times shorter than the stated disturbance time will be regarded as a disturbance.

DISL The parameter states the number of consecutive, faulty seizure on one external line that tolerated before the external line is given a disturbance marking.

NODG This is a market-dependent parameter.BCAP Sets the bearer capabilities of the route (outgoing side for ISDN).

Possible value are: 64 kbit/s restricted 64 kbit/s unrestricted 3.1 khz audio Speech 7 khz audio (used for video telephony and high quality ISDN

telephony 16 kbit/s unrestricted digital

8.8.2 The RODAI (Route Data Initiate) command

This command is used to define the characteristics used by the interface between the external line and the system. The route must have been initiated with ROCAI. It is necessary to key command RODAI before the route is completely initiated.

,VARI= RODAI:ROU=,TYPE= ,VARO= [,VARC=][,FILTER=]; ,VARI=,VARO=ROU = Route numberTYPE = Type of signaling, TL-block in the MD110VARI = Variations on incoming trafficVARO = Variations on outgoing trafficVARC = Variations common for incoming and outgoing trafficFILTER = If filter equipment is used

TYPE States what type of signaling diagram, i.e. the TL function block in the MD110 that is used.

VARIVAROVARC

State the signal diagram variations for incoming or outgoingTraffic (VARI/VARO) or variations common for incoming andOutgoing traffic (VARC).Typical characteristics are:

Types of register signal Whether end of selection (EOS) shall be sent.

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Whether B-answer shall be sent/received. Characteristics for different time supervisions.

FILTER States whether filter equipment is connected between tone sender and PABX.

8.8.3 The ROEQI (Route Equipment Initiate) command

The ROEQI command is used to initiate one or more equipment position(s) as external line(s) of a previously initiated route.

One or more lines can be initiated at the same time in a LIM. The line that comes first is associated with the equipment position stated. The rest of the external lines are associated with the subsequent free equipment positions of the right type in the same LIM.

ROEQI:ROU=,TRU=…,EQU=[,SQU=][,INDDAT=];ROU = Route numberTRU = Trunk line numberEQU = Equipment positionSQU = Signalling equipment positionINDDAT = Individual trunk data

ROU States to which route the new trunk line is connected TRU States the trunk line number. LIM and serial number for the external line.EQU States the equipment position for connection for the external line.SQU States the equipment position for a signaling unit.INDDAT Sets individual trunk data for the external line.

8.8.4 The RODDI (Route External Destination Data Initiate) command

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The command RODDI is used to initiate the ordinary route (or direction) choice, or an alternative route choice to an external destination. The external destination may be a public exchange. Up to seven alternative choices can be initiate in order to reach a external destination.

Parameters of special importance are CHO, SRT, TRC and PRE.

,CUST=RODDI:DEST= ,CHO= [,PRE=] ,DRN= [,TRC=] ,CUST=,CHO= ,ROU= [,SRT=][,NUMACK=][,ADC=];DEST = Destination codeCUST = Customer numberCHO = ChoicePRE = Predigits, digits to add to start of numberDRN = DirectionROU = Route numberTRC = Number of digits to truncateSRT = Start position in called number for digit transmissionNUMACK = Numbers to acknowledgeADC = Additional category for external traffic

DEST States the external destination. This is the route access code for calls to an external destination.

CUST States the customer number in the exchangeCHO States whether the route is the primary or an alternative route for the

stated external destination. If an alternative route is define for an external destination, this route is selected when no free external line exist in the primary route.

DRN States direction to the external destinationTRC/PRE If an alternative route is selected, the called number might be modified to

enable a connection to the same destination using another “connection path”. TRC states the number of digits to truncate starting from the first called digit.PRE states the new digits which shall be inserted as the first digits. The (first part of) PRE must be initiated as an external destination. If both TRC and PRE are given, the digits stated in pre are inserted after the number of digits stated in TRC has been truncated.

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SRT This parameter states the start position in the called number (possibly modified using TRC and PRE) from which digits shall be sent to the cooperating exchange.For instance, if number ’00’ is define as a route access code for route and these digits are to be sent to the operating exchange, SRT is set to 3.If the parameter is omitted, the digit sending will start with the first digit.

NUMACK States the number of digits from the inter-working or public exchange to be acknowledge during the pre-digit transmission.

ADC Additional category for external traffic.Values in this parameter determine the type of number for private and public calling number. These value controls what exchange numbers to use when composing the complete calling number.

8.8.5 Initiation of an ISDN route

Here is an example that sets up an ISDN route between two exchanges, A and B, with destination number 01 and 02 respectively.

Example set up

Exchange A Exchange B Destination code:01 Destination code:02

An explanation of the parameter values is given last in this chapter.

8.8.5.1 Parameters for exchange A

The first step is to set up the number series. We need to know the number to our own exchange and the cooperating exchange.

NANSI:NUMTYP=EN,NUMSE=01; NANSI:NUMTYP=ED,NUMSE=02;

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The next step sets up route number 3 from exchange A to B.

ROCAI:

ROU 3,SEL 7110000000000010,SIG 011100000031,TRAF 03151515,SERV 3110000000,TRM 4,BCAP 101110;

RODAI

ROU 3,TYPE SL60,VARI 15400000,VARO 06800000,VARC 00000310;

RODDI

DEST 02,ROU 3,SRT 1,ADC 06061000000002500060000;

ROEQI

ROU 3,TRU 1-1&&1-5,EQU 1-0-10-01;

8.8.5.1 Parameters for exchange A

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The first step is to set up the number series. We need to know the number to our own exchange and the cooperating exchange.

NANSI:NUMTYP=EN,NUMSE=02; NANSI:NUMTYP=ED,NUMSE=01;

The route from exchange B to exchange A, route number 4, is initiated in the same way as route 3 from A to B, with a few exceptions.

ROCAI:

ROU 4,SEL 7110000000000010,SIG 011100000031,TRAF 03151514,SERV 3110000000,TRM 4,BCAP 111111;

RODAI

ROU 4TYPE SL60VARI 15400000,VARO 06B00000,VARC 00000310;

RODDI

DEST 01ROU 4SRT 1ADC 06061000000002500060000;

ROEQI

ROU 4TRU 1-1&&1-5EQU 1-0-10-01;

8.8.5.3 Network

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SCEXI:FEML=1-0-10-0;FEML = First choice external master line

When communication it is not enough to be in the right place, being on time is also absolutely necessary. The term for this is synchronization. This is done by deciding that one is master (sending clock) and the other is a slave (receives clock). If the line is to a public exchange the public net is always the master and the private machine has to follow the public one. The SCEXI command is used to establish synchronization. In the slave PABXs the parameter FEML (First External Master Line) is used to define the equipment position in the LIM, which contains the trunk board whish, is receiving synchronization. FEML must always be against individual 0, the synchronization channel (e.g. FEML=1-0-10-0).

Synchronization from PSTN

Synchronization

Information

In the picture above, a small network receives synchronization from the public network. The lower two nodes get their synchronization from the node connected to the PSTN.

8.8.5.4 Explanation of the parameters

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PSTN

Here is a brief description of the values chosen for ISDN. For more information about the possible choices, consult ALEX.

Parameter SEL

7 Rerouting characteristics at DID. Rerouting at no answer, busy and any congestion

1 Open for incoming traffic1 Open for outgoing traffic0 Normal route0 Alternative route selection permitted000 Customer number, here not used0 Support virtual calls0 No malicious call tracing0 Default facility restriction level (FRL) category0 Default call service information (CSI) category0 Traveling class mark (TCM) not used01 Toll exchange category not used or extension authorized to make

outgoing calls towards automatic zone, trunk and international network0 Normal route, not set up to telident machine

Parameter SIG

0 Dial tone after line seizure not used1 Clear signal exists at incoming calls1 Clear signal exists at outgoing calls 1 Answer signal (B-answer) at outgoing calls0 Not used0 Operator extend is not allowed when no clear signal exists0 A-party receives ring tone from cooperating exchange0 Switch through-connection in transit exchange, here after minimum

number length0 Alternative routing is controlled by the firs transit exchange0 Through connection for digit transmission in transit exchange takes place

after seizure3 Signaling system is ISDN1 Net facilities are allowed

Parameter TRAF

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03 Class for abbreviated dialing15 TCD category incoming call at night15 TCD category incoming call at day 15 TCD category outgoing route

Parameter SERV

3 Permitted to transmit call-waiting tone on direct in dialing to busy party. Reception of call waiting tone and intrusion

1 Automatic call back allowed1 Tie line route0 No call metering0 Paging not allowed0 Least cost routing class of service (LCR COS). Search for route choice

until threshold level 1. No queuing.0 Release link trunk for operator (RLT) not used0 Presentation of calling number in ISDN/DPNSS networks is controlled

by the extension 0 No request of calling number (A-number) from PSTN. (only relevant in

some unique public trunks)0 Number conversation, bearer capability substitution and high level

compatibility not supported

Parameter TRM

4 Row column in the transmission matrix

Parameter BCAP

1 64 kbit/s unrestricted digital allowed0 64 kbit/s restricted digital not allowed1 3.1 khz audio allowed1 Speech allowed1 7 khz audio (UDI-TA) allowed0 16 kbits/s unrestricted digital not allowed

Parameter TYPE

SL60 Type of signaling system is ISDN

Parameter VARI

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1 Support of generic function protocol (GFP)5 Support of UUS (User to User Signaling4 Support of UUS service 300000 Not used

Parameter VARO

0 No UI-frame (User Information) support. ECMA protocol used (tie line)6 No blocking at slip alarm. Include connected number in CONNECT

message. User-User information element allowed in ALERTING message. Semi-permanent connection not allowed.

* (SEE BELOW) This position is set differently in exchange A and B 0 Type of line is tie-line00 Default TEI (Terminal End-point Identifier)0 No call metering0 Not used

8 Fix connection between B-channel and external line. No channel negotiation is allowed. Priority for layer 1 is master. Layer 2 priority is NT2. No layer 3 priority.

B Fix connection between B-channel and external line. No channel negotiation is allowed. Priority for layer 1 is master. Layer 2 priority is NT1. Layer 3 priority (network).

Parameter VARC

0000 Not used0 No support of progress message3 Ring signal is sent to cooperating exchange. Overlap receiving is

allowed. No external line without signaling (only used with semi permanent connections). No re-answer.

1 Full ISDN functionality and no UUI (User-User Information) element limitation

0 Type of signaling is ISDN. Hardware is 30B+D (TLU76/1)

Parameter ADC

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0 Immediate seizure of line at dialing6 Type of called number is local private (B-number)0 Type of calling public number is default6 Type of calling private number is local private (A-number)1 ISDN UUI is allowed0 Not fiber route or TNS (TNS=Transit Network Selection)0 Release when one of the parties goes on hook0 Backward signals for MFC-signaling. Send from first digit0 No transit seizure0 Off-hook queuing is not used0 Expensive route warning tone (ERWT) not sent0 Least cost routing allowed 0 Traveling class mark (TCM) not sent25 Maximum number of transit exchanges, default0 No PNR (Private Network Routing) number translation0 Type of protocol to use for supplementary service callback/call

completion. Proprietary UUI protocol0 Traffic category group. B-answer signal available0 Type of called number to send to the external destination. Unknown

public number 00 Function not in used, default value0 Diverted party number shall be sent as A-number at external follow me

or personal number deflection to public party0 The destination’s type of number shall be sent as A-number’s of external

follow me or personal number deflection to public party0 Disable conversion0 Proprietary UUI protocol

8.9 Example of Route

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8.9.1 Example of a Direct In Dial route (TLU81)

Use ALEX to find out more about what the specified parameters do.First set the route category.

ROCAI:ROU=4,SEL=7100000010500010,TRM=4,SERV=3000120001,DIST=30,DISL=128,TRAF=00151515,SIG=500111100000;

Next, set up the route data.

RODAI:ROU=4,TYPE=TL12,VARI=00001005;

The last step is to connect the route to a physical equipment position.

ROEQI:ROU=4,TRU=1-1&&1-4,EQU=1-0-62-0;

8.9.2 Example of an Analogue Trunk (TLU75)

Use ALEX to find out more about what the specified parameters do.First set the route category.

ROCAI:ROU=2,SEL=1100000000000010,TRM=4,SERV=2100000001,DIST=50,DISL=128,TRAF=00151515,SIG=100000000000;

Next, set up the route data.

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RODAI:ROU=2,TYPE=TL11,VARC=00000012,VARO=00000805,VARI=0000008A;

Next, set the route destination code.

RODDI:DEST=9,ROU=2,SRT=2;

The last step is to connect the route to a physical equipment position.

ROEQI:ROU=2,TRU=1-1&&1-8,EQU=1-0-62-0;

8.9.3 Example of an ISDN Public Trunk (TLU76/1)

First set the route category.

ROCAI:ROU=60,SEL=7110000000000010,TRM=5,SERV=3110000000,DIST=30,DISL=128,TRAF=00151515,SIG=311100100030,BCAP=111100;

Next, set up the route data.

RODAI:ROU=60,TYPE=SL60,VARC=00000000,VARO=00010000,VARI=00000000;

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Next, set the route destination code.

RODDI:DEST=60,ROU=60,SRT=3;

The last step is to connect the route to a physical equipment position.

ROEQI:ROU=60,TRU=1-1&&1-15,EQU=1-0-60-1; NOTE: 1-0-60-0 is for synchronizationROU=2,TRU=1-16&&1-30,EQU=1-0-60-17; NOTE: 1-0-60-16 is for signaling

The digital link must be synchronize using the command,

SCEXI:FEML=1-0-60-00;

8.9.4 Removal of Route

Use ALEX to find out more about what the specified parameters do.First, remove the equipment from the route category.

ROEQE:ROU=2,TRU=1-1;

Next remove the destination code.

RODDE:DEST=9,ROU=2;

Then, remove the route data.

ROUTE: Note: ROCAI, RODAIROU=2;

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