size of socket buffers in ACC/X.25

[Stefan Paitoni]

Hi,
I am using sockets to access a X.25 network. I needed to increase the size of socket buffers (with setsockopt()) because I encountered OOB_VC_MSG_TOO_BIG out-of-band event. I looked in HP documentation (X.25/9000 Programmer's guide) and I saw that the maximum size was 58,254 bytes, which is not enough for me ! I tried 80,000 bytes and it worked ! Is it because the HP system has an ACC card ? So what is the maximum value ? (I dont want to test several values to know what is the maximum one!). In what documentation can I find that value ?