hi,
i'm using fiu and fm, but i wonder how the duration of v21 preamble pcm is determined ? i found the amount of V21 preamble IFP send to fiu doesn't correspond to preamble pcm duration generated by fm.
send following IFP to fiu
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 02 06 c0 01 80 00 00 ff 00 00
00 03 06 c0 01 80 00 00 c8 00 00
00 04 06 c0 01 80 00 00 c1 00 00
00 05 06 c0 01 80 00 00 00 00 00
00 06 06 c0 01 80 00 00 46 00 00
00 07 06 c0 01 80 00 00 15 00 00
00 08 06 c0 01 80 00 00 00 00 00
00 09 03 c0 01 20 00 00
00 0a 03 c0 01 10 00 00
has the same output pcm by fm with following IFPs
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 01 01 06 00 00
00 02 06 c0 01 80 00 00 ff 00 00
00 03 06 c0 01 80 00 00 c8 00 00
00 04 06 c0 01 80 00 00 c1 00 00
00 05 06 c0 01 80 00 00 00 00 00
00 06 06 c0 01 80 00 00 46 00 00
00 07 06 c0 01 80 00 00 15 00 00
00 08 06 c0 01 80 00 00 00 00 00
00 09 03 c0 01 20 00 00
00 0a 03 c0 01 10 00 00
it seems that the amount of v21 preamble IFP("00 01 01 06 00 00") doesn't decide the duration of v21 preamble pcm generated by fm.