calls = list(cdr.aggregate([
            {'$match': {
                'variables.start_epoch': {
                    '$gte': int(date_from if date_from.isdigit() else 0),
                    '$lte': int(date_to)
                    },
                '$or': [
                    {'variables.l_company_id': __company_id},
                    {'variables.d_company_id': __company_id}
                ]}
            },
            {'$lookup': {
                'from': 'cdr',
                'localField': 'variables.last_bridge_to',
                'foreignField': 'variables.uuid',
                'as': 'right_part'}
            },
            {'$project': {
                'variables.billsec': 1,
                'variables.duration': 1,
                'variables.l_user': 1,
                'variables.sip_auth_username': 1,
                'variables.sip_req_user': 1,
                'x': '$right_part.variables.sip_to_user',
                'y': '$right_part.variables.accountcode',
                'z': '$right_part.variables.sip_hangup_disposition',
                'variables.dialed_user': 1,
                'variables.start_stamp': 1,
                'variables.start_epoch': 1,
                'variables.sip_from_user': 1,
                'variables.channel_name': 1,
                'variables.hangup_cause': 1,
                'variables.uuid': 1}
            },
            {'$sort': {
                'variables.start_epoch': -1}
            }]))