xDSL
Glossary
| PPPoE | PPP over Ethernet | RFC 2516 |
| PPPoA | PPP over ATM | RFC 2364 (PPP over AAL5) |
| L2TP | Layer 2 Tunneling Protocol | RFC 2661 |
| LAC | L2TP Access Concentrator | |
| LNS | L2TP Network Server | |
PPPoE
| PADT | PPPoE Active Discovery Terminate |
| PADI | PPPoE Active Discovery Initiation |
| PADO | PPPoE Active Discovery Offer |
| PADS | PPPoE Active Discovery Session-confirmation |
| PADR | PPPoE Active Discovery Request |
About ADSL time transmissions
These values are extract from Thomson SpeedTouch's manual (release 5.3.0)
| Line Speed | MTU | |||||
|---|---|---|---|---|---|---|
| 64 | 128 | 256 | 512 | 1024 | 1500 | |
| 56 kb/s | 9ms | 18ms | 36ms | 72ms | 144ms | 214ms |
| 64 kb/s | 8ms | 16ms | 32ms | 64ms | 128ms | 187ms |
| 128 kb/s | 4ms | 8ms | 16ms | 32ms | 64ms | 93ms |
| 256 kb/s | 2ms | 4ms | 8ms | 16ms | 32ms | 48ms |
| 512 kb/s | 1ms | 2ms | 4ms | 8ms | 16ms | 23ms |
| 1 Mb/s | 0,640ms | 1,2ms | 2,6ms | 5ms | 10ms | 15ms |