/// <summary> Called to create a SubmitMultiResp object </summary>
        /// <param name="defaultEncoding"></param>
        /// <param name="buf"></param>
        /// <param name="offset"></param>
        /// <returns> SubmitMultiResp </returns>
        public static SubmitMultiSmResp Create(DataCodings defaultEncoding,
                                               SmppBuffer buf,
                                               ref int offset)
        {
            var submitMultiResp = new SubmitMultiSmResp(defaultEncoding);

            try
            {
                var start_offset = offset;

                buf.ExtractHeader(submitMultiResp,
                                  ref offset);

                if (submitMultiResp.Length > HEADER_LENGTH)
                {
                    submitMultiResp.MessageId = buf.ExtractCString(ref offset);
                    submitMultiResp.UnsuccessDestinationAddresses = buf.ExtractUnsuccessDestinationAddresses(ref offset);

                    while (offset - start_offset < submitMultiResp.Length)
                    {
                        submitMultiResp.Optional.Add(buf.ExtractTLV(ref offset));
                    }
                }
            }

            catch { submitMultiResp = null; }

            return(submitMultiResp);
        }