Zeck Audio STAC Force180 Guide d'installation télécharger pdf (Page 32)

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Screening-indicator (for advanced use)

Besides the basic setting (enabled/disabled) a third option „screening-indicator‟ exists for advanced use.

It fills in the received caller-ID to the calling e164 no matter if a checksum is present or valid. But besides

that it sets the calling screening-indicator according to the checksum. This allows the user doing

manipulation of the call (for example set the caller name) with mapping tables (calling-si) in the call router

depending on the validity of the checksum.

 user-not-screened: This is the default value of the screening-indicator and is present when no

caller-ID was received or the caller-ID verification is configured to „enabled‟ or „disabled‟.

 user-passed: This indicates that a caller-ID with a valid checksum has been received.

 user-failed: This indicates that a caller-ID with no or invalid checksum has been received.

Please be aware that this use of the screening indicator is slightly different from its original meaning in

ISDN. If such calls are routed to ISDN side-effects could arise depending on the value of the screening

indicator.

Summary of configuration

Configuration of caller-ID verification

disabled (default)

enabled

screening-indicator

caller-ID present and

checksum valid

insert caller-ID in

calling e164

insert caller-ID

in calling e164

insert caller-ID in calling e164 and

set calling screening-indicator to

„user-passed‟

caller-ID present and

checksum invalid or

not present

insert caller-ID in

calling e164

insert caller-ID in calling e164 and

set calling screening-indicator to

„user-failed‟

caller-ID not present

For configuration select the desired caller-ID format on the FXS interface.

Mode: interface fxo

Command

Purpose

Step 1

[node](if-fxo)# caller-id verification { disabled

| enabled | screening-indicator }

Specifies if the checksum of the caller-

ID needs to be verified or ignored.

(default: disabled)

G.S service-mode auto-detection

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Zeck Audio STAC Force180 Guide d'installation Page 32

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