Section: 17.7.7 MBMS-Session-Duration AVP
Content: The MBMS-Session-Duration AVP (AVP code 904) is of type OctetString with a length of three octets and indicates the estimated session duration (MBMS Service data transmission). Bit 8 of octet 1 to bit 8 of octet 3 (17 bits) express seconds, for which the maximum allowed value is 86400 seconds. Bits 7 to 1 of octet 3 (7 bits) express days, for which the maximum allowed value is 18 days. The coding is as follows (the ‘s’ bits represent the seconds, the ‘d’ bits represent the days): For the whole session duration the seconds and days are added together and the maximum session duration is 19 days. The lowest value of this AVP (i.e. all 0’s), is reserved to indicate an indefinite value to denote sessions that are expected to be always-on.