Support rotary pulse dialing.
M105:
This topic is averaging 100,000 views a year. In fact it is the number 1 viewed topic in feature requests despite very few posts. Still no interest in pulse dialing capability I guess. Hello Obi?...
Lavarock7:
Many people slow down to view accident site too.
M105:
Having 35,000 more views than the next highest topic is no accident. A better analogy would be people stopping at a new car lot to see if a particular model had the features they want. All these views are not just from forum members, but more likely Google searches. The numbers don't lie and Obihai should pay attention. There is a lot of legacy pulse dial equipment still in service including millions of older alarm systems. This is an option that could be added with a firmware update without any negative effects. It should be done.
SteveInWA:
Quote from: Lavarock7 on January 27, 2017, 09:01:52 am
Many people slow down to view accident site too.
That was my exact thought, too.
SteveInWA:
Quote from: M105 on January 27, 2017, 11:27:49 am
Having 35,000 more views than the next highest topic is no accident. A better analogy would be people stopping at a new car lot to see if a particular model had the features they want. All these views are not just from forum members, but more likely Google searches. The numbers don't lie and Obihai should pay attention. There is a lot of legacy pulse dial equipment still in service including millions of older alarm systems. This is an option that could be added with a firmware update without any negative effects. It should be done.
It's 2017. Hardly anyone uses rotary dial phones any more, other than a tiny handful of collectors. Even if the OBi products could support rotary phones, the lack of * and # keys makes them mostly useless or extremely difficult to use in present-day application.
Obihai is running a business here, not some sort of Raspberry Pi DIY hobby thing. The majority of their sales are not to hobbyists. There is NO business case for this.
Finally, let's put your assumption to bed, about how easy this would be to implement. It is not a simple firmware change. Modern VoIP ATAs are not boxes jammed full of discrete components, nor do the ATA manufacturers like Obiahi "re-invent the wheel" and design their own telephone network interfaces. There are specialized, very large scale integrated circuits, specifically designed to support the various voltages and signalling standards used internationally. The ICs include all the circuitry to support DTMF (TouchTone), ring voltage, off-hook voltage, the analog audio interface to the telephone, and the digital interface to the ATA's main microcontroller (SOC). These chips have to comply with all the various countries' telecom regulations, a certification process that is too much trouble for a small company to replicate. These subsystems-on-a-chip are called Subscriber Line Interface Circuits, or SLICs.
The SLIC used in the OBi devices does not include the circuitry required to generate and interpret dial pulses.
Attached is a block diagram of the SLIC.
There are already other alternatives for supporting pulse dialing: buy a Rotatone dial pulse to DTMF converter, or buy a Grandstream ATA.
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