Problems on a Japanese type#4 phone

[gemini1096]

Hi,

I'm trying to revive a Japanese type4 phone, and use it on a IP phoneline. And for info, I'm in Japan.
So far, the phone rings when called, and we can hear the caller. Also I get the tone when I pick up the receiver, but I have two problems:

1. There is absolutely no sound coming out of it. I thought it was the original transmitter so I bought a transmitter (http://telephonelines.net/index.php?main_page=product_info&products_id=810) and wired it, but there is no difference with the original transmitter. I can call the phone all right, but whoever picks it up cannot be heard, however we can hear the caller (although not very loud)

2. Placing calls: I got a dialgizmo, and can hear the tones after each number so it seems to work. But the calls go through randomly. Most of the time I have a busy tone or the cellphone company's "unavailable message" although my cell whose number I call for tests, is right next to me, very available. I'm wondering if there isn't an issue with the tones (as I saw someone saying that recent dialgizmo have had problems). I don't know how to test these...

There may be some wiring issues since basically, the phone's original wire ends with an RJ11 female plug, then I have a cable with RJ11 on one side and RJ45 on the other, which is plugged through my Cat6 network. Then at the router's end, coming out of the RJ45 plugs I had to again change it to a RJ11 to which I plug the Dialgizmo and then into a dedicated IP phone line (RJ11) on the router. But my guess is that if I hear the tone, and receive calls, the wiring shouldn't be an issue, but who knows...

Thanks for any info, because I'm in no way a specialist and thus I don't know what to do anymore.

[Matilo Telephones]

Well well, a type 4. Very nice.

Problem 1: check the wiring. Is a 4 wire cord to the handset? Or a 3 wire?

Problem 2: solve problem 1 first.
Are you able to try the gizmo with another telephone?
It is important that you wait 10 min after connecting it, before using it.

[dsk]

If this schematic's are right

You may look for some errors.
Removing transmitter element shall do as you can n0t get a dial tone.
If you still get dial tone, shorted handset wires, or capacitor may be the first to look at.

dsk

[Greg G.]

Been wanting a Type 4, nice looking phones.  My first vintage phone was a Type 3, I still have it.

[gemini1096]

Thanks for the info. I didn't know about the 10 min wait for the dialgizmo. I'll try and see if this improves it.

As for the lack of voice, if I remove the transmitter, I do not have dialtone, so I don't think there is any short anywhere. I am not sure I can read the diagram properly but I will try. What component could be the problem if it is only the voice that has a problem?

It is a three wire handset. Here are some photos. I had to remove the old plug to put an RJ11. (Actually, I probably have to change it to a RJ45 because of my home cabling).

Also, to clarify, there is no voice whatsoever but there is A sound, it's not completely silent. I don't know the technical word for it though, it sounds like faint brown noise...

[Matilo Telephones]

Sometimes phones respond like that, when they are connected up wrong. Please try L1 and L2 only and disconnect the ringer wire.

It will not ring, but other functions such as dialing, transmitting and receiving should work normal. Does the transmitter work now?

[gemini1096]

Sometimes phones respond like that, when they are connected up wrong. Please try L1 and L2 only and disconnect the ringer wire.

It will not ring, but other functions such as dialing, transmitting and receiving should work normal. Does the transmitter work now?

Ok, so I found some time this weekend to try to fix this. Here's what I found:

- my dialgizmo is dead. It doesn't work at all anymore, so I think I had one of these duds that others have mentioned. I'll be looking for something to replace this.
- anyway, as suggested I disconnected the ringer by moving the ringer cable (black) in my rj11 plug adapter, to the unused connector next to the white cable (so inside that RJ11 adaptor - I have black on the edge, then white, then red, the last two being in the middle). The ringer doesn't work of course, and when I call the phone, it connects. And here is the surprise: I can hear me talk, but in the type#4 phone!!! NOT in the caller's phone. So obviously the original transmitter still works - but faintly - because it does transmit sound, but there is a wiring problem because it delivers this to the #4 phone own speaker...

So I'll have to go through the cabling diagram but I must admit I'm not well versed in this.

In any case, if anyone has an alternative suggestion for a dialgizmo, I'd be happy to hear it. Since a regular cordless phone should eventually share the IP line, I'm thinking about Asterisk on a Rasberry PI because no matter how hard I try, I cannot find cheap older PBX here (in Japan).
Also, considering that the transmitter of the #4 phone works, but is not loud enough, is there a way to amplify the sound (with an amplifier of some kind)?

Thanks everyone.

[dsk]

Partly nice news.   I guess "we" have to set up a test line, and do some testing.

It sounds like your phone are OK! I'm not sure about if your dial gizmo are dead or not, or it may be just the connection to your known working ATA.   (The other phone works on the ATA)

The test setup could be something like this: http://oldphoneguy.net/BatFeedGO.htm
or even simpler:

2 telephones connected together, and a 9V battery put in in one of the 2 lines. 
(if you don't have a the second telephone for the setup, you may put in a receiver (headset) and hear your no 4. I'm pretty sure it works because you hear yourselves in the telephone. The circuit are made to hear yourselves weaker then what the other party does. (known as "anti sidetone", "sidetone reduction", "A.T.C.S.")  When you are dialing 0, the other end shall hear a series of (10) loud clicks (be careful with your ears).

dsk