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Identificar conferências e transferências usando os registros de contato do Amazon Connect

Os registros de contato capturam os eventos associados à central de atendimento. Para cada novo contato, o Amazon Connect cria um registro de contato e atribui um ID de contato exclusivo ao contato.

Cada vez que um atendente consulta outro atendente (interno ao Amazon Connect ou externo, usando um número de chamada direta ou gratuita), o Amazon Connect cria um registro de contato de trecho de consulta e emite um novo ID de contato para esse trecho.

O registro de contato principal e qualquer registro de contato de trecho de consulta subsequente podem ser vinculados por vários campos de ID de contato, por exemplo, ID de contato inicial, próximo ID de contato e ID de contato anterior.

Este tópico explica como usar esses campos para diferenciar conferências e transferências em registros de contato. Também fornece uma lógica para estabelecer o tipo de operação consultiva: chamada de consulta, conferência ou transferência.

Terminologia

A seguinte terminologia é usada neste tópico:

As seções a seguir explicam como identificar cada um desses tipos de chamada em um registro de contato.

Registros de contato para chamadas consultivas

Digamos que o cliente ligue para o Atendente 1. O atendente não transfere nem consulta outras pessoas. Quando a chamada é desligada, o registro do contato se parece com o seguinte exemplo (somente os campos relevantes são mostrados):

{
    "AWSAccountId": "account-id",
    "Agent": {
        "ARN": "agent-arn",
        "AfterContactWorkStartTimestamp": "2024-08-02T17:50:53Z",
        .
        .
        "Username": "Agent1"
    },
    "ContactId": "497f04ca-6de1-408f-9b8a-ec57bcc99b31",
    .
    .
    "InitialContactId": null,
    "NextContactId": null,
    "PreviousContactId": null,
    .
    .
}

Se o Atendente 1 iniciasse uma chamada consultiva com outro atendente (Atendente 2), seria uma consulta, uma transferência ou uma conferência.

O seguinte exemplo de registro de contato mostra como isso seria para o atendente iniciador (Atendente 1) e o atendente destinatário (Atendente 2):

Esse modelo pode ser estendido para uma chamada de consulta que envolve vários atendentes. Veja a seguir exemplos de casos de uso de como ele pode ser estendido.

Como identificar chamadas consultivas

Etapa 1: agrupar todos os trechos associados ao contato principal

Essa etapa ajuda você a agrupar todas as chamadas que foram iniciadas por um iniciador/chamador específico. Os campos de interesse são ID de contato, ID do contato anterior, ID do próximo contato, ID do contato inicial e ID de contato. Isso também ajuda você a entender o número de etapas necessárias para resolver a chamada. O fluxo de trabalho referente a esse requisito é o seguinte:

Etapa 2: identificar a relação entre cada par usando seus campos de ID de contato

Você pode usar a lógica a seguir para identificar consultas versus transferências versus conferências. A lógica usa campos de carimbo de data/hora anotados no registro do contato. Todos os campos relevantes foram marcados como code.

Chamadas de consulta

O iniciador consulta outra parte: dentro da mesma instância do Amazon Connect (interna) ou externa a essa instância (externa), usando um DID ou um número gratuito.

Teleconferências

Conferências de iniciadores com outro participante na mesma instância do Amazon Connect (interna) ou externa a essa instância (externa), usando um DID ou um número gratuito.

Transferir chamadas

O iniciador consulta outra parte: dentro da mesma instância do Amazon Connect (interna) ou externa a essa instância (externa), usando um DID ou um número gratuito.

Trechos de código

Os exemplos de trechos de código a seguir, em SQL, Java script e Python, demonstram como identificar chamadas de conferência, transferência e consultoria utilizando a lógica descrita na seção anterior. Esses trechos são fornecidos como exemplo e não se destinam à produção.

Código SQL

-- Conference transfer query DO NOT EDIT --
SELECT current_cr.contact_id,
    current_cr.initial_contact_id,
    current_cr.previous_contact_id,
    current_cr.next_contact_id,
    previous_cr.agent_username as initiator_agent_username,
    COALESCE (
        current_cr.agent_username,
        current_cr.customer_endpoint_address
    ) as recipient_agent_username,
    current_cr.agent_connected_to_agent_timestamp,
    current_cr.agent_after_contact_work_start_timestamp,
    current_cr.transfer_completed_timestamp,
    CASE
        WHEN previous_cr.agent_after_contact_work_start_timestamp < current_cr.agent_after_contact_work_start_timestamp
            AND previous_cr.transfer_completed_timestamp IS NOT NULL THEN 'TRANSFER'
        WHEN previous_cr.agent_after_contact_work_start_timestamp > current_cr.agent_after_contact_work_start_timestamp
            AND current_cr.agent_interaction_duration_ms <= 2000 THEN 'CONSULT'
        WHEN previous_cr.agent_after_contact_work_start_timestamp > current_cr.agent_after_contact_work_start_timestamp
            AND current_cr.agent_interaction_duration_ms > 2000 THEN 'CONFERENCE'
        WHEN current_cr.agent_username is NULL
            AND current_cr.initiation_method = 'EXTERNAL_OUTBOUND'
            AND previous_cr.agent_after_contact_work_start_timestamp > current_cr.disconnect_timestamp 
            AND previous_cr.agent_customer_hold_duration_ms > current_cr.external_third_party_interaction_duration_ms THEN 'EXTERNAL_CONSULT'
        WHEN current_cr.agent_username is NULL
            AND current_cr.initiation_method = 'EXTERNAL_OUTBOUND'
            AND previous_cr.agent_after_contact_work_start_timestamp > current_cr.disconnect_timestamp 
            AND previous_cr.agent_customer_hold_duration_ms < current_cr.external_third_party_interaction_duration_ms THEN 'EXTERNAL_CONFERENCE'
        WHEN current_cr.agent_username is NULL
            AND current_cr.initiation_method = 'EXTERNAL_OUTBOUND'
            AND current_cr.disconnect_timestamp > previous_cr.transfer_completed_timestamp THEN 'EXTERNAL_TRANSFER' ELSE 'START'
    END AS TYPE
FROM contact_record_link current_cr
    LEFT JOIN contact_record_link previous_cr ON previous_cr.contact_id = current_cr.previous_contact_id
WHERE (
        -- INPUT CONTACT ID --
        current_cr.initial_contact_id = 'A CONTACT ID'
        or current_cr.contact_id = 'SAME CONTACT ID AS ABOVE'
    )
order by current_cr.agent_connected_to_agent_timestamp asc
                    
                

Código Python

"""Module Compare CTR's and establish relation"""
###############################################################################
# Usage python ctr_processor.py [Initial Contact ID]
# Example: python CTR_Processor.py 497f04ca-6de1-408f-9b8a-ec57bcc99b31
#
# Have your CTR record JSON files in the same directory as this Python module
# and execute the module as noted above. The input parameter is the
# Initial Contact ID / the Contact ID of the first leg of the call.
#
####################################################################z###########

import json
import re
import os
import sys
from dateutil import parser

PATH_OF_FILES   = './'
JSON            = '.json'
ENCODING        = 'UTF-8'
INTERACTION_DURN_THRESHOLD = 2
TYPE_INITIAL        = 'STAND ALONE'
TYPE_CONSULT        = 'CONSULT'
TYPE_EXT_CONSULT    = 'EXT_CONSULT'
TYPE_EXT_CONF       = 'EXT_CONFERENCE'
TYPE_CONFERENCE     = 'CONFERENCE'
TYPE_TRANSFER       = 'TRANSFER'
TYPE_UNKNOWN        = 'UNKNOWN'
CONTACT_STATE_INT   = 'INTERMEDIATE'
CONTACT_STATE_FINAL = 'FINAL'
CONTACT_STATE_START = 'START'
PRINT_INDENT        = 4

def process_ctr_records(ctr_array):
    """ Function to process CTR Records"""
    relation = {}
    output_list = []
    if ctr_array is None : return None
    for i, a_record in enumerate(ctr_array):
        if (prev_cid := a_record.get('PreviousContactId', None)) is not None:
            if (parent_ctr := get_parent_node(ctr_array, a_record['ContactId'], prev_cid)) is not None:
                relation = establish_relation(parent_ctr, a_record)
        else:
            relation = establish_parent(a_record)
        if relation is not None:
            output_list.append(relation)
    return output_list
           
def establish_parent(a_ctr):
    """ Establish the first record - the one that doesn't have a Previous Contact ID"""
    if a_ctr.get('Agent', None) is not None:
        return {
                'Agent': a_ctr['Agent']['Username']
                ,'ConnectedToAgentTimestamp': a_ctr['Agent']['ConnectedToAgentTimestamp']
                ,'Root Contact ID': a_ctr['ContactId']
                ,'Type': TYPE_INITIAL
                ,'Contact State': CONTACT_STATE_START
            }
   
def establish_relation(parent, child):
    """ Establish Conf / Transfer / Consult relation between two Agents"""
    if is_external_call(child):
        return establish_external_relation(parent, child)
    else:
        return establish_internal_relation(parent, child)

def establish_external_relation(parent, child):
    """ Establish Conf / Transfer / Consult relation between two Agents - External call"""
    ret = {
        'Parties': parent['Agent']['Username'] + ' <-> External:' + child['CustomerEndpoint']['Address']
        ,'Contact State': parent.get('Contact State', CONTACT_STATE_INT)
        ,'ConnectedToAgentTimestamp': child['ConnectedToSystemTimestamp']
    }

    parent_acw_start_ts = parser.parse(parent['Agent']['AfterContactWorkStartTimestamp'])
    child_disconnect_ts  = parser.parse(child['DisconnectTimestamp'])
    if (parent_acw_start_ts - child_disconnect_ts).total_seconds() > 0: # Parent ended after child: Consult or conference
        ret['Type'] = TYPE_EXT_CONSULT if (parent['Agent']['CustomerHoldDuration'] - child['ExternalThirdParty']['ExternalThirdPartyInteractionDuration']) > INTERACTION_DURN_THRESHOLD else TYPE_EXT_CONF
    elif ((transfer_completed_ts := parser.parse(parent.get('TransferCompletedTimestamp', None))) is not None) and \
         ((child_disconnect_ts - transfer_completed_ts).total_seconds() > 0): # ACW started after transfer was completed
        ret['Type'] = TYPE_TRANSFER
    return ret
    
def establish_internal_relation(parent, child):
    """ Establish Conf / Transfer / Consult relation between two Agents - Internal call"""        
    ret = {
        'Parties': parent['Agent']['Username'] + ' <-> ' + child['Agent']['Username']
        ,'Contact State': parent.get('Contact State', CONTACT_STATE_INT)
        ,'Child Contact ID': child.get('ContactId', 'NOTHING')
        ,'ConnectedToAgentTimestamp': child['Agent']['ConnectedToAgentTimestamp']
    }

    parent_acw_start_ts = parser.parse(parent['Agent']['AfterContactWorkStartTimestamp'])
    child_acw_start_ts  = parser.parse(child['Agent']['AfterContactWorkStartTimestamp'])
 
    if (parent_acw_start_ts - child_acw_start_ts).total_seconds() > 0: # Parent ended after child: Consult or conference
        ret['Type'] = TYPE_CONSULT if child['Agent']['AgentInteractionDuration'] < INTERACTION_DURN_THRESHOLD else TYPE_CONFERENCE
    elif ((transfer_completed_ts := parser.parse(parent.get('TransferCompletedTimestamp', None))) is not None) and \
         ((child_acw_start_ts - transfer_completed_ts).total_seconds() > 0): # ACW started after transfer was completed
        ret['Type'] = TYPE_TRANSFER
    return ret

def is_external_call(a_record):
    """Is this an external call """
    if (a_record.get('Agent', None) is None and
        a_record.get('InitiationMethod', None) == 'EXTERNAL_OUTBOUND'):
        return True
    return False

def get_parent_node(ctr_array, child_cid, child_prev_cid):
    """ Get the parent node when we have a Previous Contact ID"""    
    for i, a_record in enumerate(ctr_array):
        if (parent_cid := a_record.get('ContactId', None)) is not None:
            if compare_strings(parent_cid, child_prev_cid):
                if (parent_next_cid := a_record.get('NextContactId', None)) is not None:
                    if compare_strings(parent_next_cid, child_cid):
                        return a_record |  {'Contact State': CONTACT_STATE_FINAL}
                    else:
                        return a_record
                else:
                    return a_record |  {'Contact State': CONTACT_STATE_INT}

def compare_strings(s1, s2):
    """ Compare two Contact IDs"""    
    if s1 is None or s2 is None : return False 
    return re.search(re.compile(s2), s1)

def read_all_ctr_records(a_cid):
    """ Read all the CTR records for a given Initial Contact ID. Modify for S3 read"""
    ctr_array = []
    for file_name in [file for file in os.listdir(PATH_OF_FILES) if file.endswith(JSON)]:
        with open(PATH_OF_FILES + file_name, encoding=ENCODING) as json_file:
            try:
                a_ctr = json.load(json_file)
            except ValueError:
                print('Error in parsing JSON. File name:[', file_name, ']')
            
            if a_ctr is not None:
                c_id = a_ctr['ContactId']
                init_cid = a_ctr.get('InitialContactId', None)
                if compare_strings(a_cid, c_id):
                    ctr_array.append(a_ctr)
                elif compare_strings(a_cid, init_cid):
                    ctr_array.append(a_ctr)
            
    return ctr_array

def main():
    """ Entry point"""
    if len(sys.argv) < 2:
        print('Incorrect number of arguments (', len(sys.argv), ') --> python ctr_processor.py [Initial Contact ID]')
        return
    else:
        output_list = process_ctr_records(read_all_ctr_records(sys.argv[1]))
        if output_list is not None and len(output_list) > 0:
            output_list.sort(key=lambda x: x['ConnectedToAgentTimestamp'])
            for i, an_entry in enumerate(output_list):
                print(json.dumps(an_entry, indent=PRINT_INDENT))
        else:
            print('Unable to find Contact ID:[', sys.argv[1], '] in the input CTR Records. Please check the files and try again.')

if __name__ == "__main__":
    main()

Código JS

// Has a dependency on the following Node.js modules: - date-fns, fs, path
//sample input: node index.js 497f04ca-6de1-408f-9b8a-ec57bcc99b31

const fs = require('fs');
const path = require('path');
const { parseISO } = require('date-fns');

const PATH_OF_FILES = './';
const JSON_EXT = '.json';
const ENCODING = 'UTF-8';
const INTERACTION_DURATION_THRESHOLD = 2;
const CONTACT_TYPES = {
    INITIAL: 'STAND ALONE',
    CONSULT: 'CONSULT',
    EXTERNAL_CONSULT: 'EXT_CONSULT',
    EXTERNAL_CONFERENCE: 'EXT_CONFERENCE',
    CONFERENCE: 'CONFERENCE',
    TRANSFER: 'TRANSFER',
    EXTERNAL_TRANSFER: 'EXT_TRANSFER',
};
const CONTACT_STATES = {
    INTERMEDIATE: 'INTERMEDIATE',
    FINAL: 'FINAL',
    START: 'START',
};
const PRINT_INDENT = 4;

function processCtrRecords(ctrArray) {
    if (!ctrArray) return null;
    const outputList = [];

    ctrArray.forEach(record => {
        let relation = null;
        const prevCid = record.PreviousContactId;
        if (prevCid) {
            const parentRecord = findParentRecord(ctrArray, record.ContactId, prevCid);
            if (parentRecord) {
                relation = establishRelation(parentRecord, record);
            }
        } else {
            relation = establishInitialRecord(record);
        }
        if (relation) {
            outputList.push(relation);
        }
    });

    return outputList;
}

function establishInitialRecord(record) {
    if (record.Agent) {
        return {
            'Agent': record.Agent.Username,
            'ConnectedToAgentTimestamp': record.Agent.ConnectedToAgentTimestamp,
            'Root Contact ID': record.ContactId,
            'Type': CONTACT_TYPES.INITIAL,
            'Contact State': CONTACT_STATES.START,
        };
    }
}

function establishRelation(parent, child) {
    return isExternalCall(child)
        ? establishExternalRelation(parent, child)
        : establishInternalRelation(parent, child);
}

function establishExternalRelation(parent, child) {
    const parentAcwStartTs = parent.Agent?.AfterContactWorkStartTimestamp
        ? parseISO(parent.Agent.AfterContactWorkStartTimestamp)
        : null;
    const childDisconnectTs = child.DisconnectTimestamp
        ? parseISO(child.DisconnectTimestamp)
        : null;

    const relation = {
        'Parties': `${parent.Agent.Username} <-> External:${child.CustomerEndpoint.Address}`,
        'Contact State': parent['Contact State'] || CONTACT_STATES.INTERMEDIATE,
        'ConnectedToAgentTimestamp': child.ConnectedToSystemTimestamp,
    };

    if (parentAcwStartTs && childDisconnectTs && (parentAcwStartTs - childDisconnectTs) > 0) {
        if (parent.Agent.CustomerHoldDuration - child.ExternalThirdParty.ExternalThirdPartyInteractionDuration > INTERACTION_DURATION_THRESHOLD) {
            relation['Type'] = CONTACT_TYPES.EXTERNAL_CONSULT;
        } else {
            relation['Type'] = CONTACT_TYPES.EXTERNAL_CONFERENCE;
        }
    } else if (parent.TransferCompletedTimestamp) {
        const transferCompletedTs = parseISO(parent.TransferCompletedTimestamp);
        if (transferCompletedTs && childDisconnectTs && (childDisconnectTs - transferCompletedTs) > 0) {
            relation['Type'] = CONTACT_TYPES.EXTERNAL_TRANSFER;
        }
    }

    return relation;
}

function establishInternalRelation(parent, child) {
    const parentAcwStartTs = parent.Agent?.AfterContactWorkStartTimestamp
        ? parseISO(parent.Agent.AfterContactWorkStartTimestamp)
        : null;
    const childAcwStartTs = child.Agent?.AfterContactWorkStartTimestamp
        ? parseISO(child.Agent.AfterContactWorkStartTimestamp)
        : null;

    const relation = {
        'Parties': `${parent.Agent.Username} <-> ${child.Agent.Username}`,
        'Contact State': parent['Contact State'] || CONTACT_STATES.INTERMEDIATE,
        'Child Contact ID': child.ContactId || 'NOTHING',
        'ConnectedToAgentTimestamp': child.Agent.ConnectedToAgentTimestamp,
    };

    if (parentAcwStartTs && childAcwStartTs && (parentAcwStartTs - childAcwStartTs) > 0) {
        relation['Type'] = child.Agent.AgentInteractionDuration < INTERACTION_DURATION_THRESHOLD
            ? CONTACT_TYPES.CONSULT
            : CONTACT_TYPES.CONFERENCE;
    } else if (parent.TransferCompletedTimestamp) {
        const transferCompletedTs = parseISO(parent.TransferCompletedTimestamp);
        if (transferCompletedTs && childAcwStartTs && (childAcwStartTs - transferCompletedTs) > 0) {
            relation['Type'] = CONTACT_TYPES.TRANSFER;
        }
    }

    return relation;
}

function isExternalCall(record) {
    return !record.Agent && record.InitiationMethod === 'EXTERNAL_OUTBOUND';
}

function findParentRecord(ctrArray, childCid, childPrevCid) {
    for (const record of ctrArray) {
        const parentCid = record.ContactId;
        if (compareStrings(parentCid, childPrevCid)) {
            const parentNextCid = record.NextContactId;
            if (parentNextCid && compareStrings(parentNextCid, childCid)) {
                return { ...record, 'Contact State': CONTACT_STATES.FINAL };
            } else {
                return { ...record, 'Contact State': CONTACT_STATES.INTERMEDIATE };
            }
        }
    }
    return null;
}

function compareStrings(s1, s2) {
    return s1 && s2 && s1.includes(s2);
}

function readAllCtrRecords(contactId) {
    return fs.readdirSync(PATH_OF_FILES)
        .filter(file => file.endsWith(JSON_EXT))
        .map(fileName => JSON.parse(fs.readFileSync(path.join(PATH_OF_FILES, fileName), ENCODING)))
        .filter(record => compareStrings(contactId, record.ContactId) || compareStrings(contactId, record.InitialContactId));
}

function main() {
    const [initialContactId] = process.argv.slice(2);
    if (!initialContactId) {
        console.log('Usage: node index.js [Initial Contact ID]');
        return;
    }

    const outputList = processCtrRecords(readAllCtrRecords(initialContactId));
    if (outputList.length) {
        outputList.sort((a, b) => new Date(a.ConnectedToAgentTimestamp) - new Date(b.ConnectedToAgentTimestamp));
        outputList.forEach(entry => console.log(JSON.stringify(entry, null, PRINT_INDENT)));
    } else {
        console.log(`Unable to find Contact ID: [${initialContactId}]. Please check and try again.`);
    }
}

if (require.main === module) {
    main();
}