User manual

97
FAS
01234 16
31
Time Slots
64k 64k 64k 64k 64k 64k 64k896k
17 ~ 30
CAS
5 ~ 15
704k
Data Data Data Data Data Data Data Data Data Data Data
01234567
831
Time Slots
64k 64k 64k 64k 64k 64k 64k 64k 64k 64k1408k
9 ~ 30
Fractional E1, PCM30 and PCM30C
Using the E1 framing of PCM30(FAS+CAS) or PCM30C(FAS+CAS+CRC4), the FAS will occupy Time Slot 0 and CAS Time
Slot 16. There are only 30 Time Slot left for data. On the other hand, the maximum data rate is 1920kbps.
The First Time Slot setting of PCM30(FAS+CAS) and PCM30C(FAS+CAS+CRC4) have to follow the rule:
First Time Slot  30 - Time Slot Number
TS16 cannot be used for data.
Unframed E1
In Unframed E1, there is no framing or channelization. User data are inserted into all 32 channels (64k x 32 = 2048k) of the E1
stream. The object of running without framing is to utilize the full bandwidth of the E1 line. Also, when run in unframed mode,
the G.SHDSL.bis modems are completely transparent to any framing when deployed in E1 extension applications.