ISDN terminal adapter restrictions

The terminal adapters in this topic have been evaluated. They are suggested only for the origination of Integrated Services Digital Network (ISDN) remote connections from the system.

3Com Impact IQ ISDN:

This terminal adapter is not suggested for the System i™ platform for the following reasons:

• The terminal adapter does not support V.34 analog modem connections. However, it can support V.34 analog modem connections by using the external RJ-11 connection.

• The terminal adapter does not currently support V.90 connections.

• The terminal adapter might not be connected to the system at speeds greater than 115 200 bps.

• The terminal adapter does not automatically support Challenge Handshake Authentication Protocol (CHAP). If you set S84 to 0, CHAP authentication is performed.

• The system is unable to determine when the connection ends when monitoring the Data Set Ready signal from the terminal adapter. This causes a potential system security exposure.

Motorola BitSurfr Pro ISDN:

This terminal adapter is not suggested for the System i platform for the following reasons:

• The terminal adapter does not support V.34 analog modem connections. However, it can support V.34 analog modem connections by using the external RJ-11 connection.

• The terminal adapter does not currently support V.90 connections.

• The terminal adapter might not be connected to the system at speeds greater than 115 200 bps.

• The terminal adapter does not automatically support CHAP authentication. However, setting @M2=C allows CHAP authentication to be performed.

• The terminal adapter does not automatically permit answering both single-link and multilink PPP calls. The remote origination terminal adapter must be set to the same protocol (single-link or multilink) as the answering terminal adapter.

• The hardware flow control mechanism does not work well with this terminal adapter. This causes degraded performance when the system is sending data on a multilink PPP connection.

Parent topic: