Multi-Tech Systems ISIHP-4U, ISIHP-4SD manual Communication Protocols for Isihp Ports

Introduction

Communication Protocols for ISIHP Ports

Ports on the ISIHP card can be associated with different protocols, as follows:

Auto-Protocol.Modem or terminal adapter automatically negotiates with host to operate using the host’s current protocol.

Central Site Modem. Common designation for analog modems built into the ISIHP card. These are V.90 modems. For the ISIHP-2S/2U, the last four modems should be designated as Central-Site modems; for the ISIHP-4S/4U, the last eight modems should be designated as Central-Site modems. (See Port/Device table on previous page.)

MultiLink PPP async. This protocol allows the functional bundling together of three WAN ports so they function as a single high- bandwidth data pipeline using only one IP address. Bundling occurs on demand when the needed bandwidth exceeds that available on a single circuit.

PPPasync. (Point-to Point Protocol, asynchronous) Protocol allowing computers a dial-up connection to the Internet. PPP includes error detection, data compression and other improvements over Serial Line Internet Protocol (SLIP) connections.

V.120. Terminal rate adaptation protocols. These apply to ISDN B- channels when using a V interface. This protocol includes V.110.

X.75. An international standard that allows X.25 packet-switched networks to communicate with each other. X.75 is a gateway protocol for interconnection of X.25 public networks.

MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD 9