Yozo Nitta writes: > They found description about TA CU use as following:
TA == Terminal Adapter (for ISDN) CU == Customer (?) > - Communication is enabled via PC "ER signal on". I _think_ "ER signal" is DTR. I used to work in ISDN, and I don't recall "ER signal" being a common term. > They confirmed TA doesn't work unless Sun server > is in condition which enables to receive data. > > Considering above, please answer questions following: > > Q1. Is a signal "ER signal on" sent when PPP daemon is started? DTR is asserted on the serial port when *any* process opens the device node (e.g., /dev/cua/a). That includes the PPP daemon (pppd), so when pppd opens the port DTR is asserted. It's not specific to PPP. > Q2. Is "ER signal on" sent before script is run? Same as Q1: DTR is set when the port is opened, which is before a "connect" script is run. (I'm assuming you're talking about "connect" -- pppd has many different scripts.) > Q3. Is there timing "ER signal on" is issued? > e.g in xxx seconds after pppd is run It's as soon as pppd opens the port, which (by default) is immediately. If you use the "demand" option, then pppd won't try to open the port until there's traffic on the network interface. -- James Carlson, Solaris Networking <[EMAIL PROTECTED]> Sun Microsystems / 1 Network Drive 71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677 _______________________________________________ networking-discuss mailing list [email protected]
