ISDN_CS(3X) — NEWS-OS Programmer’s Manual

NAME

isdn_cs_call, isdn_cs_disc, isdn_cs_stat, isdn_cs_noinfo − support IP connection via ISDN

SYNOPSIS

#include <newsisdn/isdn_iotype.h>
intisdn_cs_stat(info)
structc_status ∗info;

intisdn_cs_noinfo(noinfo)
structn_info∗noinfo;

intisdn_cs_call(addr, sub, wait_time)
char∗addr;
char∗sub;
intwait_time;

intisdn_cs_disc(wait_time)
intwait_time;

DESCRIPTION

isdn_cs_stat copies ISDN call status into info structure.

isdn_cs_noinfo copies the peer ISDN address into noinfo structure. However, this information is only valid when isdn_cs_stat() returns status of CALL_SETUP, CALL_ALERT or CALL_EST.

isdn_cs_call makes an IP connection to the specified peer addr and sub address. addr may include hyphens `−’ for better readability. To omit the sub-address, sub should be (char ∗)0. This function waits in max wait_time seconds for the connection to establish. It returns immediately if wait_time is set to 0.

isdn_cs_disc closes an IP connection via ISDN. This function waits in max wait_time seconds for disconnection. It returns immediately if wait_time is set to 0.

RETURN VALUE

All functions described above return 0 on success. In case of execution error, a −1 is returned with an error code stored in errno. On timeout a −2 is returned. In case of failure to establish or deestablish a call, a −3 is returned; the cause value can be interrogated with isdn_cs_stat.

FILES

/usr/sony/lib/libisdn.a, /sys/newsisdn/isdn_iotype.h

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