static int __agent_start_monitoring(struct ast_channel *ast, struct agent_pvt *p, int needlock)
{
        char tmp[AST_MAX_BUF],tmp2[AST_MAX_BUF], *pointer;
        char filename[AST_MAX_BUF];
        char agent_campaign[AST_MAX_BUF];
        char agent_leadid[AST_MAX_BUF];
        char agent_phonenum[AST_MAX_BUF];

        int res = -1;
        if (!p)
                return -1;
        if (!ast->monitor) {

                if (pbx_builtin_getvar_helper(ast, "CAMPAIGN") && !ast_strlen_zero(pbx_builtin_getvar_helper(ast, "CAMPAIGN"))) {
                        strcpy(agent_campaign, !pbx_builtin_getvar_helper(chan, "CAMPAIGN"));

                        if (option_verbose > 2)
                                ast_verbose(VERBOSE_PREFIX_3 "Saw variable CAMPAIGN=%s, on Channel '%s'.\n",agent_campaign,ast->name);
                }
                if (pbx_builtin_getvar_helper(ast, "LEADID") && !ast_strlen_zero(pbx_builtin_getvar_helper(ast, "LEADID"))) {
                        strcpy(agent_leadid, pbx_builtin_getvar_helper(chan, "LEADID"));

                        if (option_verbose > 2)
                                ast_verbose(VERBOSE_PREFIX_3 "Saw variable LEADID=%s, on Channel '%s'.\n",agent_leadid,ast->name);
                }
                if (pbx_builtin_getvar_helper(ast, "PHONENUM") && !ast_strlen_zero(pbx_builtin_getvar_helper(ast, "PHONENUM"))) {
                        strcpy(agent_phonenum, pbx_builtin_getvar_helper(chan, "PHONENUM"));

                        if (option_verbose > 2)
                                ast_verbose(VERBOSE_PREFIX_3 "Saw variable PHONENUM=%s, on Channel '%s'.\n",agent_phonenum,ast->name);
                }

                /* snprintf(filename, sizeof(filename), "agent-%s-%s",p->agent, ast->uniqueid); */
                snprintf(filename, sizeof(filename), "agent-%s-%s-%s-%s-%s",p->agent,agent_campaign,agent_leadid,agent_phonenum,ast->uniqueid);
                /* substitute . for - */
                if ((pointer = strchr(filename, '.')))
                        *pointer = '-';
                snprintf(tmp, sizeof(tmp), "%s%s",savecallsin ? savecallsin : "", filename);
                ast_monitor_start(ast, recordformat, tmp, needlock);
                ast_monitor_setjoinfiles(ast, 1);
                snprintf(tmp2, sizeof(tmp2), "%s%s.%s", urlprefix ? urlprefix : "", filename, recordformatext);
#if 0
                ast_verbose("name is %s, link is %s\n",tmp, tmp2);
#endif
                if (!ast->cdr)
                        ast->cdr = ast_cdr_alloc();
                ast_cdr_setuserfield(ast, tmp2);
                res = 0;
        } else
                ast_log(LOG_ERROR, "Recording already started on that call.\n");
        return res;
}