在Linux系统下进行smslib开发

在Linux系统下进行smslib开发遇到的问题，在服务启动以下部分就卡住不动（在Linux系统下使用gnokii可以发送短信的）：

15:02:13,351 INFO  [STDOUT] 2011-12-26 15:02:13,351 INFO [smslib] - <SMSLib: A Java API library for sending and receiving SMS via a GSM modem or other supported gateways.
This software is distributed under the terms of the Apache v2.0 License.
Web Site: http://smslib.org>
15:02:13,351 INFO  [STDOUT] 2011-12-26 15:02:13,351 INFO [smslib] - <Version: 3.5.1>
15:02:13,352 INFO  [STDOUT] 2011-12-26 15:02:13,352 INFO [smslib] - <JRE Version: 1.6.0_06>
15:02:13,352 INFO  [STDOUT] 2011-12-26 15:02:13,352 INFO [smslib] - <JRE Impl Version: 10.0-b22>
15:02:13,352 INFO  [STDOUT] 2011-12-26 15:02:13,352 INFO [smslib] - <O/S: Linux / i386 / 2.6.18-194.el5>
15:02:13,420 INFO  [STDOUT] 2011-12-26 15:02:13,420 INFO [smslib] - <Queue directory not defined. Queued messages will not be saved to filesystem.>
15:02:13,426 INFO  [STDOUT] 2011-12-26 15:02:13,424 INFO [smslib] - <GTW: modem.com1: Starting gateway, using Generic AT Handler.>
15:02:13,426 INFO  [STDOUT] 2011-12-26 15:02:13,426 INFO [smslib] - <GTW: modem.com1: Opening: /dev/ttyS0 @9600>
15:02:13,436 INFO  [STDOUT] Stable Library
15:02:13,436 INFO  [STDOUT] =========================================
15:02:13,436 INFO  [STDOUT] Native lib Version = RXTX-2.1-7
15:02:13,436 INFO  [STDOUT] Java lib Version   = RXTX-2.1-7

跪求高手指点。