front-end : custom phone field

[item]

Hi,
if someone can correct my front-end custom phone field :
in the past, these custom field worker for a "clicktocall" to cisco spa phone
but with new phone field with "international prefix" .. he bug :

this is a modifed .. a receive the click but i loose all "new feature of phone field".

define('custom:views/fields/phone', ['views/fields/phone'], function (Dep) {

   return Dep.extend({

        setup() {
            Dep.prototype.setup.call(this);


            this.events['click [data-action="dial"]'] = (e) => {
                e.preventDefault();
                let $target = $(e.currentTarget);

                let phoneNumber = $target.attr('data-phone-number');

                this.dialTo( phoneNumber );

            };
        },

        afterRender: function () {
             Dep.prototype.setup.call(this);

        },

        dialTo: function ( phoneNumber )
        {

            console.log('OK')
            if (!this.getUser().get('ext'))
            {
                 Espo.Ui.notify('Completez votre extension dans User', 'danger', 4000);
                 return;
            }
            var scope = this.model.urlRoot;
            var foreignLink = 'calls';

            //this.notify('Loading...');

            //let phoneNumber = $(elem).attr('data-phone-number');
            /*
            Espo.Ajax
                .postRequest('Cisco/:phoneNumber', {
                    user: this.getUser(),
                    ext: this.getUser().get('ext'),
                    phoneNumber: phoneNumber
                })
                .then(response => {
                    if (response['status'] == true)
                    {
                        Espo.Ui.notify(response['message'], 'success', 8000);
                    }else{
                         Espo.Ui.notify( response['message'] , 'error', 2000);
                    }
                });
            //this.trigger('sync');
            */
        }
    });
});​ 

And i have these warning : model.toJSON is deprecated. Use 'getClonedAttributes' instead.

this warning come with this custom js.
Hope someone can correct