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Information

Analog/ISDN/GeoCENTREX

Parallel Ringing (PRNG)

A30828-X1150-B621-2-7629

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Parallel Ringing (PRNG) InformationAnalog/ISDN/GeoCENTREX

Trademarks:

All designations used in this document can be trademarks, the use of which by third parties for theirown purposes could violate the rights of their owners.

Copyright (C) Siemens AG 2000-2001

Issued by the Information and Communication Networks GroupHofmannstraße 51D-81359 München

Technical modifications possible.Technical specifications and features are binding only insofar asthey are specifically and expressly agreed upon in a written contract.

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InformationAnalog/ISDN/GeoCENTREX


This document consists of a total of 18 pages. All pages are issue 2.

Contents

1 Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Mode of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Subscriber controlled input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.1 Analog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.2 ISDN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113.3 GeoCENTREX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143.3.1 Analog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143.3.2 ISDN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143.4 Additional possibilities for feature control . . . . . . . . . . . . . . . . . . . . . . . . . . 143.5 Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4 Call charge registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5 Administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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1 DefinitionThe Parallel Ringing (PRNG) feature simultaneously signals calls to two separate linesbelonging to the same subscriber, e.g. a fixed line in the PSTN and a mobile number.The subscriber can accept the call on either of the two lines.

Operator benefits– increased call charge revenue through additional call setups (called subscriber 1-

called subscriber 2 subscriber)– enhanced service offered to subscribers: greater accessibility

Subscriber benefits– for mobile phone users, e.g. greater accessibility– call diversion need not be activated explicitly– it is not necessary to publicize the directory number of the second line

Availability

Use and effect

Interactions

For interaction with other features, see Feature Interactions.

Networknode PRNG activeA

calledsubscriber 1

callingsubscriber

calledsubscriber 2

Analog ISDN

Subscriber X X

GeoCENTREX subscriber X X

Callingsubscriber

Called sub-scriber

PRNG use --- X

PRNG effect --- X

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2 Mode of operationThe Parallel Ringing (PRNG) feature is of interest to customers who have two lines andwant calls to reach them at all times under both numbers. These two lines could, for in-stance, be a fixed line in the PSTN and a mobile number. When the feature is active,every call to the user under the PSTN number is automatically rung on the mobile phonetoo. The user can answer the call at either of the two phones. The call is switched to theline at which the user first answers.

The feature can be activated and deactivated by the operator or by the subscriber bymeans of subscriber controlled input. The subscriber can check on his or her telephonewhether one of the feature variants is active for his or her line.

The feature is assigned to ISDN subscribers on a service-specific basis for voice servic-es.

The maximum number of parallel calls that can be activated per access:• Analog

two per line• ISDN

two per B channel

Other feature authorizations

The following other authorizations can be granted in conjunction with the “parallel ring-ing” feature.• Analog / ISDN

– The calling party is informed, optionally with or without indication of the calledsubscriber’s 2 number, when a call is forwarded to a parallel-ringing number.

– The operating company can assign selected called subscriber 1 the right to for-ward calls to otherwise blocked directory numbers (emergency call numbers, ser-vice numbers).

• ISDN– Whenever the called subscriber 1 party makes an outgoing call, he or she is in-

formed that the feature is active for that directory number. This authorization canonly be assigned to ISDN basic access lines.

– The called subscriber1 party is informed of the fact that parallel ringing is beingperformed.

– The called subscriber 2 is informed of the directory number of the called subscrib-er 1 y, or in the case of multiple call forwarding, the called subscriber’s 1 numberand that of the last forwarding party.

Code point blocking

When a directory number is entered by means of subscriber controlled input, the CP (co-ordination processor) checks whether it is a permitted destination number for parallelringing.

The following destination numbers are not permitted:– numbers that are unknown to the CP (insofar as a directory number is administered

in its own exchange; subscribers served by other exchanges are only checked asdestinations on a partially qualified basis)

– numbers that are blocked for call forwarding at exchange level (for instance policeand emergency numbers)

– numbers associated with a traffic type that is blocked for call forwarding

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3 Subscriber controlled inputThe feature can be administrated and used by subscriber controlled input.

For the subscriber procedure, see:• Analog subscriber• ISDN subscriber• GeoCENTREX

– Analog subscriber– ISDN subscriber

Access code

The access code for subscriber controlled input consists of a maximum of 6 charactersor, for GeoCENTREX subscribers, a maximum of 5 characters. It can be formed fromthe symbols ★ , # and the service code (SC) with the digits 0 to 9. The operator canspecify the character strings for the access code.

Differences by pulse dialing

The selected digits are not obligatory; other digits can be input (depending on the exist-ing numbering plan).– 1111 at the beginning of an input in place of ★

– 1112 at the beginning of an input in place of #– 1113 at the beginning of an input in place of ★ #– ★ as a disconnecting signal after the service code, not relevant– # after the subscriber controlled input, not relevant

Subscriber controlled input functions Signaling method

Analog ISDN

Pulse DTMF Keypad Funct.

Activate X X X ---

Deactivate X X X ---

Enter data X X X ---

Delete data X X X ---

Enter data and activate X X X ---

Delete data and deactivate X X X ---

Activate with/without data X X X ---

Feature use --- --- --- ---

Status request X X X ---

Data request X X X ---

Status request with/without data X X X ---

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Acknowledgments after subscriber controlled input

The following tones, announcements and display texts are examples and can be admin-istrated by the operator. The display texts can be changed to suit individual projects.

The subscriber controlled input can be acknowledged by:• Tones

– ringing tone– acceptance tone– subscriber busy tone or number unobtainable tone (NU)

• Announcements– subscriber controlled input successful– subscriber controlled input unsuccessful– feature is already activated– feature is not activated– feature is not available– wrong input

• Display texts (only in ISDN)– wrong input– not authorized– request rejected– successful– unsuccessful– not available

3.1 Analog

Activate

Deactivate

Start DT SC

PIN optional (( ) PIN)

End IND

Start SCDT


End IND

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Enter data

Delete data

Enter data and activate

Delete data and deactivate

Start DT SC

optional ( )

PIN optional PIN( )

B2 number B2

End IND

Start SCDT


End IND

Start DT SC

optional ( )

PIN optional PIN( )

B2 number B2

End IND

Start SCDT


End IND

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Activate with/without data

Interrogate state

Interrogate data

Start DT SC

with data

optional ( )

PIN optional PIN( )

B2 number B2

without data


End IND

Start SCDT


End IND

Start SCDT

Interrogate data


Check data

optional ( )

PIN optional PIN( )

B2 number B2

End IND

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Interrogate state with/without data

3.2 ISDN

Activate

Deactivate

Start SCDT

with data

optional ( )

PIN optional PIN( )

B2 number B2

without data


End IND

Start DT SC


MSN optional MSN)(

BC optional BC)(

End IND

Start SCDT


MSN optional MSN)(

BC optional BC)(

End IND

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Enter data

Delete data

Enter data and activate

Delete data and deactivate

Start DT SC

optional ( )

PIN optional PIN( )

B2 number B2

MSN optional MSN)(

BC optional BC)(

End IND

Start SCDT


MSN optional MSN)(

BC optional BC)(

End IND

Start DT SC

optional ( )

PIN optional PIN( )

B2 number B2

MSN optional MSN)(

BC optional BC)(

End IND

Start SCDT


MSN optional MSN)(

BC optional BC)(

End IND

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Activate with/without data

Interrogate state

Interrogate data

Start DT SC

with data

optional ( )

PIN optional PIN( )

B2 number B2

without data


MSN optional MSN)(

BC optional BC)(

End IND

Start SCDT


MSN optional MSN)(

BC optional BC)(

End IND

Start SCDT

Interrogate data


Check data

optional ( )

PIN optional PIN( )

B2 number B2

MSN optional MSN)(

BC optional BC)(

End IND

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Interrogate state with/without data

3.3 GeoCENTREX

3.3.1 AnalogFor inputs, see subscriber procedure Analog.

3.3.2 ISDNFor inputs, see subscriber procedure ISDN.

3.4 Additional possibilities for feature control

Start SCDT

with data

optional ( )

PIN optional PIN( )

B2 number B2

without data


MSN optional MSN)(

BC optional BC)(

End IND

Feature Use

Automatic Feature Subscription (AFS) ---

Remote Subscriber Controlled Input (RSCI) X

Feature Control Offline X

Subscriber Controlled Input via Internet (ISCI) X

General Facility Reset (GFR) ---

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3.5 Legend

4 Call charge registrationCall charge registration is possible with:– Automatic Message Accounting with Individual Call Charge Registration– Pulse Metering– Message Detail Recording (MDR) for GeoCENTREX– Flat rate

Automatic Message Accounting with Individual Call Charge Registration (AMA) andpulse metering can be combined. One or more call charge pulses can be generated forpulse metering.

Charges for feature input and feature usage

The charges for operator inputs, successful subscriber controlled input and featureusage are assigned to the subscriber.

The following call charge registration is possible:– Facility input by operator (FAIO)– Facility input by subscriber (FAIS)– Facility usage (FAU)

Introduces activation from terminal orintroduces input from terminal orused as separator

Introduces deactivation from terminal orintroduces cancellation from terminal orused at end of feature input

Introduces interrogate state from terminal

Enter ...

Lift handset

Replace handset

( ) Optional input

B2 B2 number

BC Basic code

DT Dial tone

IND Indication (tone, announcement, display texts)

MSN Multiple subscriber number

PIN Personal identification number (4 to 12 digits)

SC Service code

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Call charges for connections

Call charges for connections are assigned as follows:– the calling subscriber pays the charges for the connection up to the called subscriber– the forwarding subscriber pays the charges for the connection up to the forwarded

number destination

Note:

If charging for unsuccessful call attempts is active, then charges are also registered forsetting up the call for parallel ringing of the B2 party, regardless of whether or not the B1party answers.

5 AdministrationThe operator can perform all administration functions on the NetManager by means ofuser-friendly applications or MML commands.

Feature authorization

The network operator assigns authorization for the feature when requested by the sub-scriber.

Action FAIO FAIS FAU

Activate X X ---

Deactivate X X ---

Enter data X X ---

Delete data X X ---

Assign authorization X --- ---

Remove authorization X --- ---

Assign authorization to modify X --- ---

Remove authorization to modify X --- ---

status request, data request --- X ---

Use --- --- X

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Subscriber access types

The feature can be used with the following types of subscriber access:

ISDN basic service

The allocation and usage of the feature are service specific. The basic code may be dif-ferent, depending on the individual project.

Type Subscriber GeoCENTREX

Analog ISDN Analog ISDN

Main station X --- X ---

Basic access --- X --- X

PBX X --- X ---

PBX with BA and/or PA --- X --- X

PBX line --- --- --- ---

PBX line with Direct Dialing In (DDI) --- --- --- ---

PBX line, connected like a subscriber --- --- --- ---

Coinbox --- --- --- ---

Emergency call station --- --- --- ---

MLHG line --- --- --- ---

Basic attendant console --- --- --- ---

MAC attendant console --- --- --- ---

ISDN basic service Basic code

All services 00

Circuit mode: speech 01

Circuit mode: 64 kbit/s unrestricted 02

Circuit mode: 3.1 kHz audio 03

Circuit mode: 7 kHz audio 04

Telephony 3.1 kHz 32

Teletex 64 kbit/s 33

Fax group 4 34

Videotex 35

Video telephony 36

Fax group 2/3 37

Telephony 7 kHz 38

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Call charge registration

For more information, please refer to OMN:EXCH-TA.

System administration

The following feature data can be administrated in the network node:– options for subscriber controlled input– display and modification of network node options– recording by means of traffic measurement

For more information, please refer to OMN:EXCH-SY.

Subscriber administration

For more information, please refer to OMN:EXCH-SU.

GeoCENTREX administration

For more information, please refer to OMN:EXCH-CTX.

6 RequirementsHardware• UI-LTG with OCANEQ speech equipment and INDAS for:

– acknowledging subscriber controlled input

Signaling• Signaling between the network nodes

Signaling system no. 7 (SS7)– ISDN user part (ISUP)– Telephony user part (TUP)

• Subscriber signalingAnalog– Dual-tone multifrequency (DTMF)– Pulse dialingISDN– Digital subscriber signaling system no.1 (DSS1)

Subscriber interfaces

The following interfaces for subscriber access can be used:– DLU– LTG– V5.1 interface– V5.2 interface

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