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Subject: T38 ASN.1
X-Listprocessor-Version: 6.0 -- ListProcessor by Anastasios Kotsikonas
X-Comment: The ASN.1 Mailing List



                     T38 DEFINITIONS AUTOMATIC TAGS ::=BEGIN 

                     IFPPacket ::=SEQUENCE{ 
                            type-of-msg      Type-of-msg, 
                            data-field       Data-Field OPTIONAL 
                     } 

                     Type-of-msg ::=CHOICE{ 
                         
                        t30-indicator   ENUMERATED        { 
                                    no-signal, 
                                    cng, 
                                    ced, 
                                    v21-preamble, 
                                    v27-2400-training, 
                                   v27-4800-training, 
                                   v29-7200-training, 
                                   v29-9600-training, 
                                   v17-7200-short-training, 
                                   v17-7200-long-training,                  

                                   v17-9600-short-training,         
                                   v17-9600-long-training,                  

                                  v17-12000-short-training,   
                                  v17-12000-long-training,                  

                                  v17-14400-short-training,     
                                  v17-14400-long-training, 
                                    ...        }, 
                             
                              data            ENUMERATED        { 
                                    v21, 
                                    v27-2400, 
                                   v27-4800, 
                                    v29-7200, 
                                    v29-9600, 
                                    v17-7200, 
                                    v17-9600, 
                                    v17-12000, 
                                    v17-14400, 
                                    ...        } 
                     } 

                     Data-Field ::=SEQUENCE OF SEQUENCE{ 
                            field-type      ENUMERATED        { 
                                    hdlc-data, 
                                    hdlc-sig-end, 
                                    hdlc-fcs-OK, 
                                    hdlc-fcs-BAD, 
                                    hdlc-fcs-OK-sig-end,                    

                                    hdlc-fcs-BAD-sig-end,               
                                    t4-non-ecm-data,                 
                                    t4-non-ecm-sig-end 
                            }, 
                    field-data  OCTET STRING(SIZE(1..65535)) OPTIONAL} 

                     END 



                    
-------------------------------------------------------------------- 

                     Hello Friends! 

                     The above listed ASN.1 description is for a a          
T.38 IFPPacket. If i want to 
                     encode a packet of this type in PER with values        
as: 

                     IFPPacket { 

                          Type_of_msg = data   

                          data Enumeration selected = v17-7200 
                           
                          //Include Optional Field with 2 data packets 

                           data[0] { 
                                      field-type = hdlc-fcs-ok-sig-end 
                                      field-data = 0x45,0x32,0x11 
                                    } 
                          data[1] { 
                                      field-type = t4-non-ecm-data 
                                      field-data = 0x47,0x12,0x91,0x29 
                                    } 

                     } 



                     Please let me know what the ALLIGNED PER               
encoding of this IFPPacket 
                     will look like. I want to compare it with the PER      
codec i have developed. 

                     Thank you 
                     Ahmar 


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