Parameter Reference
78
ITSP Profile X – RTP Web Page (X = A, B, C, D, E, F, G, H) Parameter Guide 
Parameter Description Default Setting
ITSP Profile X – RTP (VoiceService.1.VoiceProfile.n.RTP.) for X = A, B, …, H corresponding to n = 1, 2, …, 8, 
respectively
LocalPortMin Base of port range for tx/rx RTP with this SP.  16600 (X=A)
16800 (X=B)
17000 (X=C)
17200 (X=D)
17400 (X=E)
17600 (X=F)
17800 (X=G)
18000 (X=H)
LocalPortMax Top of port range for tx/rx RTP with this SP.  16798 (X=A)
16998 (X=B)
17198 (X=C)
17398 (X=D)
17598 (X=E)
17798 (X=F)
17998 (X=G)
18198 (X=H)
KeepAliveInterval Interval in seconds between sending keep alive packet on 
an RTP channel that is currently in idle (due to call hold for 
instance). RTP keepalive is disabled if the value of this 
parameter is set to 0.
0 
DSCPMark Diffserv code for outgoing RTP packets with this SP.  0 
X_UseSSL Enables forcing the device to send RTP over an SSL 
channel.
No
X_RefreshSession Allow incoming RTP packets to refresh session. Yes
X_SymmetricMedia If incoming payload type changes unannounced, after 10 
packets with the new payload type, decoding will switch to 
the new format. If symmetric media is enabled, outgoing 
packets will also be in the new format.
Yes
ITSP Profile X – RTCP (VoiceService.1.VoiceProfile.n.RTP.RTCP.) for X = A, B, …, H corresponding to n = 1, 
2, …, 8, respectively
Enable Enables RTCP operation.  No
TxRepeatInterval RTCP packet transmission interval in milliseconds.  10000 
LocalCName The canonical name to use in RTCP messages. If blank, the 
device uses <userid>@<local_IP_address> as its 
canonical name. 
X_RTCPMux Enables using an rtcp-mux attribute in SDP (send and 
receive RTCP on the same port as RTP).
No