Table 2-23 Codec Methods Supported By Om - New Rock Technologies OM10 User Manual

Name
RTP drop SID
RTP destination
address
FoIP
Jitter buffer
Receiving port for
FoIP
ECM
V21 Signal detection
Receive gain
Transmit gain
Packet size
Redundancy
PSTN failover
Network fault routed
to analog trunk

Table 2-23 Codec Methods Supported by OM

Codec Supported by OM
G729A
PCMU/PCMA
Table 2-24 Mapping between the reliability requirement and the TOS value
Level TOS Value (High Delay
and High Throughput)
0 0x08
1 0x28
2
0x48
3
0x68
Shanghai New Rock Technologies Inc.
Description
Determine whether to discard received RTP SID voice packets. By
default, SID voice packets will not be dropped.
Note: RTP SID packets should be dropped only when they are in
unconformity to the specifications. Nonstandard RTP SID data could
generate noise for calls.
The default value is from SDP media connection.
From SDP global connection: Obtain the peer IP address from SDP
global connection;
From SDP media connection: Obtain the peer IP address from
Connection Information behind SDP Media Description.
Select fax mode: T.38 or T.30
Set the extent of T.38 jitter buffer, and the default is 250. The valid
range is 40 ~ 1000 in milliseconds.
Set whether to open a new port when the OM is switching to T.38 mode,
and by default, original voice port will be used.
Open a new port: Use the new RTP port;
Use original voice port: Use the original RTP port that created on call
set.
Determine whether to use corrective mode of fax. By default, it is not
selected.
Select if V21 signal detection is used when T.38 faxes. The default
value is "Not Select".
Set the receiving gain of T.38 fax, with the default of -6dB.
Set the transmission gain of T.38 fax, with the default of 0dB.
Set the packet size of T.38. 30 milliseconds is the default value.
Set the number of the redundant frames in T.38 data package, default is
4.
In the case of network fault, outgoing calls are automatically routed to
FXO port. The default value is "Select".
Bit Rate (Kbit/s)
8
64
TOS Value (Low Delay
and Low Throughput)
0x10
0x30
0x50
0x70
Time Intervals of RTP Package
Sending (ms)
10/20/30/40
10/20/30/40
TOS Value (Low Delay
and High Throughput)
0x18
0x38
0x58
0x78
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