UCM6200 Series User Manual 
Internal Options/Jitter Buffer 
 
Table 83: Internal Options/Jitter Buffer 
Select to enable jitter buffer on the sending side of the SIP channel. The default 
setting is "No". 
Configure the time (in ms) to buffer. This is the jitter buffer size used in "Fixed" 
jitter  buffer,  or  used  as  the  initial time  for  "adaptive" jitter  buffer. The  default 
setting is 100. 
Configure  the  maximum  time  (in  ms)  to  buffer  for  "Adaptive"  jitter  buffer 
implementation,  or  used  as  the  jitter  buffer  size  for  "Fixed"  jitter  buffer 
implementation. The default setting is 200. 
Configure the jitter buffer implementation on the sending side of a SIP channel. 
The default setting is "Fixed". 
  Fixed 
The size is always equal to the value of "Max Jitter Buffer". 
  Adaptive 
The size is adjusted automatically and the maximum value equals to the 
value of "Max Jitter Buffer". 
 
Internal Options/RTP Settings 
 
Table 84: Internal Options/RTP Settings 
Configure the RTP port starting number. The default setting is 10000.   
Configure the RTP port ending address. The default setting is 20000. 
Configure to enable or disable strict RTP protection. If enabled, RTP packets 
that do not come from the source of the RTP stream will be dropped. The default 
setting is "Disable". 
Configure  to  enable  or  disable  RTP  Checksums  on  RTP  traffic. The  default 
setting is "Disable".