AudioCodes Mediant 800 MSBG User Manual page 648

By utilizing the 'Profiles' mechanism (see ''Coders and Profiles'' on page 138), you can
configure the TDM Tunneling feature to choose different settings based on a timeslot or
groups of timeslots. For example, you can use low-bit-rate vocoders to transport voice and
'Transparent' coder to transport data (e.g., for D-channel). You can also use Profiles to
assign ToS (for DiffServ) per source - a timeslot carrying data or signaling is assigned a
higher priority value than a timeslot carrying voice.
For tunneling of E1/T1 CAS trunks, set the protocol type to 'Raw CAS' (ProtocolType = 3 /
9) and enable RFC 2833 CAS relay mode ('CAS Transport Type' parameter is set to 'CAS
RFC2833 Relay').
Note:
Below is an example of ini files for two devices implementing TDM Tunneling for four E1
spans. Note that in this example both devices are dedicated to TDM tunneling.
Terminating Side:
EnableTDMOverIP = 1
;E1_TRANSPARENT_31
ProtocolType_0 = 5
ProtocolType_1 = 5
ProtocolType_2 = 5
ProtocolType_3 = 5
[PREFIX]
FORMAT PREFIX_Index = PREFIX_DestinationPrefix,
PREFIX_DestAddress, PREFIX_SourcePrefix, PREFIX_ProfileId,
PREFIX_MeteringCode, PREFIX_DestPort;
Prefix 1 = '*,10.8.24.12';
[\PREFIX]
;IP address of the device in the opposite
;location
;Channel selection by Phone number.
ChannelSelectMode = 0
;Profiles can be used do define different coders per B-channels
;such as Transparent
;coder for B-channels (timeslot 16) that carries PRI ;signaling.
[TrunkGroup]
FORMAT TrunkGroup_Index = TrunkGroup_TrunkGroupNum,
TrunkGroup_FirstTrunkId, TrunkGroup_LastTrunkId,
TrunkGroup_FirstBChannel, TrunkGroup_LastBChannel,
TrunkGroup_FirstPhoneNumber, TrunkGroup_ProfileId,
TrunkGroup_Module;
TrunkGroup 1 = 0,0,0,1,31,1000,1;
TrunkGroup 1 = 0,1,1,1,31,2000,1;
TrunkGroup 1 = 0,2,2,1,31,3000,1;
TrunkGroup 1 = 0,3,3,1,31,4000,1;
TrunkGroup 1 = 0,0,0,16,16,7000,2;
TrunkGroup 1 = 0,1,1,16,16,7001,2;
TrunkGroup 1 = 0,2,2,16,16,7002,2;
TrunkGroup 1 = 0,3,3,16,16,7003,2;
[/TrunkGroup]
[ CodersGroup0 ]
FORMAT CodersGroup0_Index = CodersGroup0_Name, CodersGroup0_pTime,
CodersGroup0_rate, CodersGroup0_PayloadType, CodersGroup0_Sce;
CodersGroup0 0 = g7231;
CodersGroup0 1 = Transparent;
[ \CodersGroup0 ]
SIP User's Manual
For TDM over IP, the parameter CallerIDTransportType must be set to '0'
(disabled), i.e., transparent.
648
Mediant 800 MSBG
Document #: LTRT-12804