Call router configuration task list 412SmartWare Software Configuration Guide 34 • Call router configurationNote Incoming ISDN calls set the presentation indicator according to the receivedISDN Setup message. Incoming H.323 calls only set the presentation indi-cator transparently when Octet3a handling is enabled. Other interfaces setthe presentation indicator to allowed.The call router can route calls according to the following presentation indicators. These values beside defaultcan be used for the key parameter to create a routing table entry:• allowed—Presentation of the calling party number is allowed. This is the default value for calls that arrivethrough an interface that does not support presentation indicators.• restricted—Presentation of the calling party number is restricted.• interworking—The calling party number is not available due to interworking.Note At the originating user-network interface, the presentation indicator is usedfor indicating the intention of the calling user for the presentation of thecalling party number to the called user. You possibly want to remove the call-ing party number when the user set the presentation indicator to restricted.To achieve this, route restricted calls to a mapping table that sets the calling-e164 to the empty string (“”) as it is shown in the example below.Example: Presentation indicator routing tableThis example uses a pseudo routing table that just forwards all calls to the interface IF-OUT but first executesthe mapping table NO-CNPN. This mapping table examines the presentation indicator and modifies the call-ing party number. If the presentation indicator is restricted, the calling party number is cleared. For all otherpresentation indicator values, the calling party number is not modified.node(cfg)#context csnode(ctx-cs)[switch]#routing-table calling-pi PInode(rt-tab)[PI]#route default dest-interface IF-OUT NO-CNPNnode(rt-tab)[PI]#exitnode(rt-tab)[switch]#mapping-table calling-pi to calling-e164 NO-CNPNnode(map-tab)[NO-CNPN]#map restricted to “”Screening Indicator Routing TableThe screening indicator (calling-si) table is used to route calls based on the screening indicator of the callingparty number. A network validates the calling party’s number and puts the validation result to the screeningindicator. This allows a network to transparently pass the calling party number set by the calling user, but tellthe called user whether or not the number selected by the calling party really belongs to him or her.Note Incoming ISDN calls set the screening indicator according to the receivedISDN Setup message. Incoming H.323 calls only set the screening indicatortransparently when Octet3a handling is enabled. Other interfaces set thescreening indicator to user-not-screened.
