/*! \brief Helper function that does the beginning dialing per dial structure */
static int begin_dial(struct ast_dial *dial, struct ast_channel *chan)
{
    struct ast_dial_channel *channel = NULL;
    int success = 0;

    /* Iterate through channel list, requesting and calling each one */
    AST_LIST_LOCK(&dial->channels);
    AST_LIST_TRAVERSE(&dial->channels, channel, list) {
        success += begin_dial_channel(channel, chan);
    }

    /* If number of failures matches the number of channels, then this truly failed */
    return success;
}