ChorusOS systems may support multiple PPP interfaces,
each of which is identified by a unique name such as ppp0.
Depending on the number of serial lines physically available on the ChorusOS
system, the binary distribution of the ChorusOS 4.0 product provides support
for up to two PPP lines. (If you have the source distribution,
you can increase the number of lines possible by modifying the value of
NPPP in the ppp.h header file.) See the
appropriate guide in the ChorusOS 4.0 Target Family Documentation
Collection to verify serial line support for your particular target
The first serial line on the ChorusOS system is reserved for system debug, and for console access using the host workstation tip(1) utility. It cannot be used for PPP. The console requires a terminal type cable.
A direct connection between a host and a target requires a null modem cable. See "Asynchronous EIA-232-E Null Modem" in Solstice PPP 3.0.1 Administration Guide for details.
If you are unsure what serial lines your system uses, yet you are able to boot the system, you can use the dtree(1M) utility to display devices listed in the target system device tree:
% rsh target dtree
ChorusOS systems may be used with modems. The chat(1M) utility can help you handle modem connection and configuration.
This document does not provide information about modem configuration commands, nor does it provide information about the cables required for connecting modems to targets.