def modifyPdpContextRequest():
    """MODIFY PDP CONTEXT REQUEST Section 9.5.6"""
    a = TpPd(pd=0x8)
    b = MessageType(mesType=0x48)  # 01001000
    c = RadioPriorityAndSpareHalfOctets()
    d = LlcServiceAccessPointIdentifier()
    e = QualityOfService()
    packet = a / b / c / d / e
    return packet
MODIFY PDP CONTEXT REQUEST Section 9.5.6