Hello Eli,
On Tue, 18 May 1999, Eli Marmor wrote:
|Hi,
|
|I have some questions about ISDN and Linux. I tried to ask Bezeq,
|but it seems that they don't know even basic facts about ISDN (from
|my talks with them, it looks that they even don't know Hebrew; When
|I tried to ask about identifying the number that the caller DIALED,
|they tried to detail the "caller-ID" service, and after 6 (!) times
|I explained, they began to understand my question, but then asked
|me: "Why the hell, do you want to know that number; Don't you know
|your number?"...).
|
|Currently, I have an analog (normal) phone line, which is connected
|7*24 to a Linux machine. Using mgetty, it receives both faxes and
|logins on the same line and with the same number. The logins may be
|either simple logins or PPP clients (so the Linux is used as a PPPD
|server). I want to replace this line by an ISDN line. My questions:
|
|1. Are my current configuration and features supported by ISDN?
| Does it require anything special? (e.g. specific ISDN modem,
| rather than a simple ISDN modem supplied by the various ISPs).
The "NT Meshulav" supports normal phone line and ISDN line as well.
So you can still use mgetty on the modem to receive faxes.
|
|2. ISDN is a double line (each 64Kb); Is it possible to have 2 calls
| simultaneously? For example, call out, and still being able to
| receive faxes and logins (of course, each using only 64Kb)?
Yes you can talk on the phone and still dial out with ISDN. With faxes
it's more difficult. Since you have two numbers and two lines(channels) if
you dial from the line that the modem (mgetty) connected to the incoming
call will never reach you. However ISDN chooses a free channel. You might
want to switch to vbox(for faxes) from isdnutils.
|
|3. According to Bezeq's prospects, one ISDN line supports up to 8
| numbers (with a near-zero cost per number); Is there a way,
| preferrably by mgetty, to recognize the number that the caller
| dialed? My purpose is to have more than one number, each number
| for another purpose (one for logins, one for business faxes, one
| for private faxes, etc.), so while receiving a call, mgetty (or
| another program) can recognize the number which was dialed, and
| behave according to my rules (one number causes an e-mail to be
| sent, another number causes the fax to be converted to PostScript
| and be sent to the printer, etc.).
Yes ther is a possibility even to assign sub numbers for every slot in the
NT. However mgetty will not see those numbers. The only one who sees
the caller id (no need to enable in Bezeq) is the isdn driver. You can
write something to receive the number form it... :)
CIGAN.
|
|4. Please answer this question EVEN if ISDN is supported WELL under
| Linux: I heard that there is an NT box ("NT" does not have
| anything to do with Microsoft; It is the name of a box which is
| connected to an ISDN line), which "emulates" an analog line, so
| equipment for standard lines (like legacy phones) can be
| connected to an ISDN line, and no special equipment is required;
| Can this box allow me to continue to use my current configuration
| (i.e. current analog modem, mgetty, etc.) till I'll replace all
| the needed? Of course, in the future I want to enjoy the extra
| features of ISDN I mentioned above (8 numbers, 2 simultaneous
| calls, etc.) but Meanwhile I already want to replace the line.
|
|Thanks in advance,
|--
|Eli Marmor
|[EMAIL PROTECTED]
|El-Mar Software Ltd.
|Tel.: 972-50-237338
|
|
