Section 5.31.3.2. Configure screening patterns

5.31.3.2. Configure screening patterns

The AMO SCREN consists of the two elements SCRPATT and SCRDATA. It is recommended, to configure SCRPATT first and then SCRDATA.

Define screening pattern Typ of Number (TON) International

ADD-SCREN:TYPE=SCRPATT,SCRPPLAN=1,SCRP=498938124xx#
&498938134xx#&498938144xx#;

This numbering pattern meets the LCR rules with character strings following the digits. Every E.164 numbering pattern is allocated to a group (SCRPPLAN).

The number of screening patterns is defined in the chapter "Allocate memory" using AMO DIMSU.

The screening pattern must correspond to the TON (Type of Number) of the SCRPTYP parameter in AMO SCREN, described in chapter Configure screening patterns. This TON should not be set to unknown as this could result in ambiguous numbering.

In the example three patterns are defined. Each screening pattern corresponds to an E.164 number with TON=INTERNAT. The sequence 'xx#' indicates that two digits are to follow.

All these patterns are allocated to the SCRPPLAN number 1.

If the remote side transmitts TON INTERNATIONAL further screening patterns and data must be configured for these TON.

Configure screening data

ADD-SCREN:TYPE=SCRDATA,SNNO=1-1-400,DNO=893814402,DNOTON=NATIONAL,
TOSCAL=SCREEN,PRESCAL=CLIRDEF,TOSCOL=SCREEN,PRESCOL=COLRDEF,SCRPPLAN=1,
SCRPTON=INTERNAT,LOCDEST=381;

The following data for screening is stored in SCRDATA:

the operator number,
which numbers are to be screened and how,
the assigned numbering pattern and
the original local destination code (LOCDEST).

The PRESCAL and PRESCOL data is available for the CLIP/CLIR COLP/COLR services.

SCRDATA is used to define the following parameters:

Parameter	Function
SNNO	The screening is linked with this node number. All incoming connections on this node are assigned to the screening. Originating node=1-1-400
DNO	Number for a certain station which can be reached internally or externally (e.g. operator, service personnel, users, etc.) if the screening delivered a negative result. The numbering format must correspond to the DNOTON. The screening indicator (SI) of the DNO is programmed to Network provided. (See also chapter Presentation, parameter SCRE). The DNO (e.g. 13814402) is used with activated screening, if the parameters TOSCAL and TOSCOL are set to: SCREEN and the screening delivered negative results. SPECARR and the numbers to be screened do not correspond to the E.164 notation. With the SPECARR function, the DNO can be transmitted as second number (e.g. operator, service personnel, etc.).
DNOTON	defines the numbering format of the DNO. Note that TON=unknown could result in ambiguity as unknown can either be a partial number (e.g. 4402), a national number (e.g. 013814402) or an international number (e.g. 004113814402) with prefix. In the example TON = NATIONAL and the DNO=13814402.
TOSCAL	defines, whether or not (and how) the A number (Calling Party Number in Setup) is to be screened. NOSCR: screening is not executed. The Calling Party Number and the second number are saved unmodified. SCREEN: the Calling Party Number is checked and the second number is deleted. If the number lies within the predefined pattern, it is accepted and marked as checked (user verified and passed). The number is then saved in the format TON using the SCRPTON parameter. If this parameter is set to TON=unknown the number is modified to subscriber. In the example SCREEN is set. SPECARR: Special arrangement checks only the E.164 format and the length for the Calling Party Number. If the result is negative the DNO is used and the second number is deleted. If the result is positive the DNO is stored as second number.
PRESCAL	Display type of the Calling Party Number (A channel station number) (For secret numbers see also Override Category in AMO KNFOR parameter OVRDCAT.) CLIPPERM: CLIP is set to permanent. The Calling Party Number is always marked with "presentation allowed" (Presentation Indicator), provided a number is available. CLIPSTD: a Calling Party Number can be secret for one called party. Normally, the number is transmitted with "presentation allowed". In special cases it is transmitted with "presentation restricted". (The setting CLIPSTD also means CLIR per call or CLIR temporary mode.) CLIRPERM: CLIR is set to permanent. The Calling Party Number is always marked with "presentation restricted", provided a number is available. CLIRSTD: a Calling Party Number cannot be secret for a called party. normally, the number is transmitted with "presentation restricted". In special cases it is transmitted with "presentation allowed". (The setting CLIPSTD also means CLIP per call or CLIP temporary mode.)
TOSCOL	defines whether or not (and how) the B number (connected number in the connection) is to be screened. NOSCR: screening is not performed. The Connected Number and the second number are saved unmodified. SCREEN: the Connected Number is checked and the second number is deleted. If the number lies within the predefined pattern, it is accepted and marked as checked (user verified and passed). The number is then saved in the format TON using the SCRPTON parameter. If this parameter is set to TON=unknown the number is modified to subscriber. In the example SCREEN is set. SPECARR: Special arrangement checks only the E.164 format and the length for the Connected Number. If the result is negative, the DNO is used and the second number deleted. If the result is positive, the DNO is stored as second number.
PRESCOL	Display type of the Connected Number (B channel station number) (For secret numbers see also Override Category in AMO KNFOR parameter OVRDCAT.) CLIPPERM: CLIP is set to permanent. The Connected Number is always marked with "presentation allowed" (Presentation Indicator), provided a number is available. CLIPSTD: a Connected Number can be secret for one called party. Normally, the number is transmitted with "presentation allowed". In special cases it is transmitted with "presentation restricted". (The setting CLIPSTD also means CLIR per call or CLIR temporary mode.) CLIRPERM: CLIR is set to permanent. The Connected Number is always marked with "presentation restricted", provided a number is available. CLIRSTD: a Connected Number cannot be secret for a called party. normally, the number is transmitted with "presentation restricted". In special cases it is transmitted with "presentation allowed". (The setting CLIPSTD also means CLIP per call or CLIP temporary mode.)
SCRPPLAN	The Screening Plan defines the numbering patterns used to check the Calling Party Number or the Connected Number. All used Screening plans must be of the same SCRPTON.
SCRPTON	The Screening Pattern Type defines the TON (Type of Number) of the SCRPPLAN. The number with TON=unknown can be ambiguous as unknown can either be a partial number (e.g.. 4402), a national number (e.g. 013814402) or an international number (e.g. 004113814402) with prefix.
LOCDEST	The Originating Local Destination Code defines the digit sequence used to supplement a partial number (e.g. a speed dialing number) to a subscriber number. The LOCDEST corresponds to the local area code assigned to the partner node. LOCDEST can also be the local area code of the own node.

${DocTitle}, ID: ${DocID}

© 03/2026 Mitel Networks Corporation. All rights reserved. Mitel and the Mitel logo are trademark(s) of Mitel Networks Corporation. Unify and associated marks are trademarks of Unify Software and Solutions GmbH & Co. KG. All other trademarks herein are the property of their respective owners.