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V7122 GatewayUser Guide
By utilizing the ‘Profiles’ mechanism (see Release Cause Mapping ) 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 (for example, for D-channel). You can also use Profiles
to assign ToS (for DiffServ) per source, a time-slot carrying data or signaling gets a higher
priority value than a time-slot 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 (CASTransportType = 1).
Figure 96 and Figure 97 show an example of ini files for two V7122 gateways implementing
TDM Tunneling for four E1 spans. Note that in this example both gateways are dedicated to
TDM tunneling.
Figure 96
ini File Example for TDM Tunneling (Originating Side)
EnableTDMOverIP = 1
;E1_TRANSPARENT_31
ProtocolType_0 = 5
ProtocolType_1 = 5
ProtocolType_2 = 5
ProtocolType_3 = 5
prefix = '*,10.8.24.12' ;(IP address of the V7122 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 (time slot 16) that carries PRI signaling.
TrunkGroup = 0/1-31,1000,1
TrunkGroup = 1/1-31,2000,1
TrunkGroup = 2/1-31,3000,1
TrunkGroup = 3/1-31,4000,1
TrunkGroup = 0/16-16,7000,2
TrunkGroup = 1/16-16,7001,2
TrunkGroup = 2/16-16,7002,2
TrunkGroup = 3/16-16,7003,2
CoderName = 'g7231'
CoderName = 'Transparent'
CoderName_1 = 'g7231'
CoderName_2 = 'Transparent'
TelProfile_1 = voice,$$,1,$$,$$,$$,$$,$$,$$,$$
TelProfile_2 = data,$$,2,$$,$$,$$,$$,$$,$$,$$