Cabletron Systems CSMIM-T1 - Manual (Page 103)

CSMIM-T1 Hardware Installation Guide 6-1
CHAPTER 6
MODEM GUIDE
6.1 GENERAL
The CSMIM-T1 uses 24 high performance, error-correcting, V.34 internal
modems. They are fully compatible with V.FC (V.Fast Class) modems and
offer support for cellular operations.
Under optimum conditions, the modems reach a maximum serial-port
speed of 115,200 bps. They support V.42bis data compression, and use
Hayes Smartmodem AT and V.25bis command sets, with enhancements
for maximum flexibility. The modems achieve error-free performance
through the Microcom Networking Protocol (MNP) and V.42
error-correction protocol standards. They offer MNP Class 10 with
Adverse Channel Enhancements (ACE). MNP 10 includes:
• Multiple connection attempts during auto-reliable link negotiation
• Negotiated speed upshifts
• Aggressive adaptive packet assembly
• Dynamic Transmit Level Adjustment