Incoming Call Handling Treatment

Last Updated : Jul 14, 2015 |

Incoming Call Handling Treatment (ICHT) specifies a unique call treatment for incoming calls on ISDN and SIP trunk groups. This screen is available only if digit handling is administered as overlap, and the direction is set to outgoing.

Note:

ICHT is also used to modify the Calling Party number when Communication Manager is used as a feature server.

The Incoming Call Handling Treatment Table screen displays entries with a predefined service or feature before entries with a user-defined service or feature.

The user-defined entries are always listed in the reverse order on Incoming Call Handling Treatment Table as compared to the entries that show on Network Facilities. Therefore, for two user-defined services or features, ABC and XYZ, you can force XYZ to show before ABC on Incoming Call Handling Treatment Table by administering XYZ after ABC on Network Facilities.

Note:

DCS features that use the remote-tgs button on the remote server do not work when the local trunk group deletes or inserts digits in the incoming call.

To change the value of the fields on the Incoming Call Handling Treatment Table, use the following command:

change inc-call-handling-trmt trunk-group n, where n is an ISDN or a SIP trunk group.

Called Len

Valid Entry

Usage

0 to 21

The number of digits received for an incoming call. Zero is used when the Public Switched Telephone Network (PSTN) provider does not provide any Number Digits within the received Called Party IE, such as in Japan.

blank

When Called Number has also been set to blank, so that any length of digits associated with the Called Party IE of the Incoming SETUP message matches this field.

Called Number

Valid Entry

Usage

1 to 16

Specifies the leading digits received for an incoming call.

blank

Matches any number associated with the specified service or feature.

Del

Valid Entry

Usage

1 to 21

blank

The number of leading digits to be deleted from the incoming Called Party Number. Calls of a particular type can be administered to be routed to a single destination by deleting all incoming digits and then administering the Insert field with the required extension.

Insert

Valid Entry

Usage

1 to 16

*

#

The number of digits prepended to the front of the remaining digits after any optional digit deletions have been performed. The resultant number formed from digit deletion and insertion is used to route the call, provided night service is not in effect.

Per Call CPN/BN

Specifies when and how to request Calling Party Number (CPN) or Billing Number (BN) for calls of this type. Available only with ISDN trunk groups.

Valid Entry

Usage

cpn-only

Calling party number only

bn-only

Billing number only

bn-pref

Prefers billing number, but accepts calling party number

cpn-pref

Prefers calling party number, but accepts billing number

none

Communication Manager will not request either CPN or BN for any incoming calls of this type.

blank

Leave blank when connected to another media server or switch, or when connected to a public network outside North America. Within North America, leave blank when connected to a public network that prohibits customer equipment to request CPN or BN for individual incoming calls. The AT&T Switched Network offers this service under the titles CPN/BN to Terminating End on a Per-Call Basis and ANI (BN) on Request.
Note:

A 4-second delay occurs in terminating the call to the far-end station if the connecting server or switch stops responding to the request.

Night Serv

Available only for ISDN trunk groups.

Valid Entry

Usage

Assigned extension

Attendant group access code

attd

blank

Specifies a night service extension per Service/Feature. A Vector Directory Number (VDN) is acceptable. This entry is overridden by the night service administered for an individual trunk or the trunk group.

Service/Feature

Displays the number that corresponds to the server type administered for the trunk group or network facility. Administration is required for a call-by-call service type.

Valid Entry

Usage

Valid pre-defined Service/Feature values for cbc trunk groups

These values are administered for Network Facilities.

User-defined facility type administered for the service type

  • 0 = feature

  • 1 = service

  • 2 = incoming

  • 3 = outgoing
Related information
Night Service
Night