// Set the mode for the given E1/T1, using default parameters.
//
// This works for many setups, but not all. The possible problems are:
//
// - GTH 2.x hardware has restrictions on mixing E1 and T1 modes.
// This might hit someone trying out options. They'll get a 'conflict'
// error. If in doubt, disable all the E1/T1 before changing modes,
// for instance by cycling power.
//
// - The T1 default settings might not be right for a particular site.
// Check the L1 status page on the in-built webserver (port 8888)
// to see.
//
static void setup_layer_1(GTH_api *api, const char *pcm_name, const int mulaw) {
int result;
const char e1[] = "E1";
const char t1[] = "T1";
result = gth_set_single(api, pcm_name, "mode", (mulaw)?t1:e1);
if (result != 0) {
fprintf(stderr, "Layer 1 setup failed, useless recording likely.\n");
}
}
//------------------------------
static void install_release(const char *hostname,
const char *filename,
int verbose)
{
GTH_api api;
int result;
FILE *image;
int image_length;
char *image_data;
result = gth_connect(&api, hostname, verbose);
fopen_s(&image, filename, "rb");
fprintf(stderr, "installing software image %s\n", filename);
if (!image) die("unable to open software image file");
fseek(image, 0, SEEK_END);
image_length = ftell(image);
rewind(image);
image_data = malloc(image_length);
assert(image_data);
result = fread(image_data, image_length, 1, image);
assert(result == 1);
fclose(image);
result = gth_set_single(&api, "system_image", "locked", "false");
assert(result == 0);
result = gth_install(&api, "system_image", "binary/filesystem",
image_data, image_length);
free(image_data);
if (result != 0) die("install failed");
}