09-13-2003 05:34 AM - edited 03-02-2019 10:18 AM
hi
whts the diff between linecode :
ami AMI encoding
hdb3 HDB3 encoding
whts the purpose of mentioing the same ?
framing Selects the frame type for the T1 or E1 data line.but in the framing option ther r only 2 options like crc4/no crc4 .how we can define the frame type for T1 and E1 ??
thx
prem
09-14-2003 11:39 PM
For T1 you have two options for framing - Super Frame (SF) or Extended Frame (ESF). For E1 you have three options for framing - CRC4, No-CRC4 or Autralia:
09-17-2003 12:19 PM
AMI is Alternate Mark Inversion which means that each pulse has to be different from the last, -3v or +3v. The HDB3 is a means to keep excessive zeros from crossing the E1, similar to B8ZS if you know what that does HDB3 has the same affect only different.
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