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Re: [hylafax-users] Multiple "MODEM No carrier"
Antonio Almodóvar wrote:
I've made a call to the modem. The modem answers but it seems that the
modem doesn't detect the hangup. The modem stays waiting for carrier.
I've changed the modem class from 1 to 2.1, and the modem works well.
What's going on? Maybe line polarity issues?
Analog modems aren't typically capable of detecting a hangup. Instead,
your telco or your PBX is probably giving a "busy" signal after the
hangup, and in Class 2.1 the modem is detecting the busy tone. In Class
1 we have no mechanism to detect a busy tone after the initial call
connects. And, unfortunately the Agere chipset on your modem is
erroniously giving a "CONNECT" message on that tone:
Oct 01 12:09:43.28: [ 8035]: <-- [9:AT+FRH=3\r]
Oct 01 12:09:43.73: [ 8035]: --> [7:CONNECT]
Oct 01 12:09:44.68: [ 8035]: --> [2:10 03]
Oct 01 12:09:44.68: [ 8035]: --> [10:NO CARRIER]
So this is something that needs to be "fixed" in the HylaFAX Class 1
driver. I did get your last message, and I will get that fix done soon.
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