encoding of ADSL-Agent-Circuit-Id

Hi, I've noticed that encoding of these two attributes: ADSL-Agent-Circuit-Id ADSL-Agent-Remote-Id has been changed from string to octets (from 3.0.3 to 3.0.4), when the RFC (4679) states them as strings: Vendor-Type 1 for Agent-Circuit-Id Vendor-Length <= 65 String and Vendor-Type 2 for Agent-Remote-Id Vendor-Length <= 65 String What was the reason for the change? kind regards Pshem