# Call Recognition Service

## Purpose

Use this form to search for External Hot Desk user (EHDU) entries or to identify mapping between external Direct Inward Dialing (DID) numbers and their destination numbers. This form contains:

- All EHDU data entries, as well as all DID data configured through the DID Service form. See Call Recognition Service or Direct Inward Dialing (DID) Service for more information.

- Allow-List and Deny-List entries configured using the Caller Based Routing Service form. For more information about the Caller Based Routing Service, see Caller Based Routing and Trunk Attributes.

This form can support up to a maximum of 130000 entries.

## Field Descriptions

Parameter | Description | Default Value
Call Recognition Service Search
Find a field named | From the drop-down list, select a field within which to search for a specified value. You can search by Primary Node ID, Digit String 1 (the EHDU directory number OR the destination number for a DID number), or Digit String 2 (the EHDU external PSTN number OR the DID number). | Primary Node ID (PNI)
that has a value of | Type the value to search for; up to 7 digits each for PNI, and up to 26 digits for Digit String 1 and 2. Partial values are allowed. | Blank
Call Recognition Service
Primary Node Id (PNI) | Shows the Primary Node Identifier for any EHDU or DID entries found. The PNI represents the cluster element that hosts Digit String 1: destination number for DID entries or internal DN for EHDU entries. | Blank
Digit String 1 | Shows the internal directory number (for any EHDU entries found) OR the destination number (for any DID entries found). | Blank
Digit String 2 | Shows the external (PSTN) number (for any EHDU entries found) OR the external DID number (for any DID entries found). | Blank
CRS Service Type | Shows the service type for any entries found. Possible values are: EHDU (for External Hot Desk Users), STANDARD DID or EMERGENCY DID (for DID entries), or Allow-List or Deny-List (for Caller Based Routing services). For more information, see DID Service form and Caller Based Routing Service form. | EHDU