[Serusers] help me about voicemail(sems)

[ooo ooo]

when I call voicemail group user, I get error : 

[root at sip800 sbin]# ./sems -E


Configuration:
       configuration file:  /usr/local/etc/sems/sems.conf
       Ser's FIFO:          /tmp/vm_ser_fifo
       our FIFO:            /tmp/am_fifo
       plug-in path:        /usr/local/lib/sems/plug-in/
       daemon mode:         0
       local IP:            192.168.0.3

(4939) WARNING: reloadModuleConfig (SemsConfiguration.cpp:66): no 
configuration
found for module isdngw, maybe you want to specify config.isdngw in config 
file.
(4939) ERROR: send (AmRtpPacket.cpp:119): while sending RTP packet: Invalid 
argu
ment
(4939) ERROR: send (AmRtpStream.cpp:179): while sending RTP packet.(4939) 
ERROR:
 send (AmRtpPacket.cpp:119): while sending RTP packet: Invalid argument
(4939) ERROR: send (AmRtpStream.cpp:179): while sending RTP packet.


who have same error , pls help me , thank you.

B.R.
Zhao Zigang

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