code: def activatePdpContextAccept(PacketDataProtocolAddress_presence=0,
                               ProtocolConfigurationOptions_presence=0):
      
      a = TpPd(pd=0x8)
      b = MessageType(mesType=0x42)  # 01000010
      c = LlcServiceAccessPointIdentifier()
      d = QualityOfService()
      e = RadioPriorityAndSpareHalfOctets()
      packet = a / b / c / d / e
      if PacketDataProtocolAddress_presence is 1:
          f = PacketDataProtocolAddress(ieiPDPA=0x2B)
          packet = packet / f
      if ProtocolConfigurationOptions_presence is 1:
          g = ProtocolConfigurationOptions(ieiPCO=0x27)
          packet = packet / g
      return packet
docs: ACTIVATE PDP CONTEXT ACCEPT Section 9.5.2