api/sendpulse.js
function smsCancelCampaign(callback, campaign_id) {
    if (campaign_id === undefined) {
        return callback(returnError("Empty sms campaign id"));
    }

    sendRequest('sms/campaigns/cancel/' + campaign_id, 'PUT', {}, true, callback);
}
function smsCancelCampaign(callback, campaign_id) {
    if (campaign_id === undefined) {
        return callback(returnError("Empty sms campaign id"));
    }

    sendRequest('sms/campaigns/cancel/' + campaign_id, 'PUT', {}, true, callback);
}
Cancel sms campaign

@param callback
@param campaign_id