When both AVP types (standard and extended) are received, while SR OS is supporting extended type (Extended-BW-NR), the extended AVP is processed and the standard one is ignored.
If the extended AVP type is not supported, that is if the Extended-BW-NR is not enabled, and a message with extended bandwidth AVPs is received, one of the following occurs:
If the M-bit in the extended type AVP is set, SR OS returns an error.
If the M-bit in the extended type AVP is not set, SR OS ignores the extended type and processes the standard type.