Return channel in MHP

Question

Hello,
I've connected a modem in my set-top-box and I want to connect the modem of my set-top-box with the modem of my computer. It's like communicating two computers (each with a modem) with a "hyperterminal".
I think you know what I'm talking about... :)
I use this code:
public class RChannel implements Xlet, ResourceClient, ConnectionListener {
   public void initXlet(XletContext ctx) throws XletStateChangeException {
      try {
         ConnectionRCInterface cif = getConnectionRCInterface();
         cif.addConnectionListener(this);
         cif.reserve(this,null);                             
         cif.setTarget(new ConnectionParameters("67740", "user", "password", "10.95.32.4"));
         System.out.println("Trying to connect...");
         cif.connect();
         System.out.println("Connected?");
      catch (Exception e) {
         System.out.println(e);
}Then, when I invoke: cif.connect(); I get a message tell me that the connection is established, but after somer seconds I get another message tell me that the connection was refused.
I don't know why the modems cannot connect or why they disconnect after some seconds. Any idea?
And how send and receive data in the modem of my set-top-box? How can I do it in MHP?
Thanks in advance.

Answer 1

The modem in the PC may be accepting calls, but does the STB need some special information in order to use it effectively? After all, the STB still needs to configure an IP address and networking information for the modem connection.
It sounds to me like it's a problem where the modem is connecting (i.e. the call is being accepted by the PC) but then some other part of the process (authentication or IP address configuration) isn't working properly.
It may be worth talking to the STB vendor and seeing if their MHP implementation has any special requirements on the call collector that's used for their STB. It's more common with closed middleware, but they may be able to provide some more information.
Steve.