T1/E1 Channels Configuration

The T1/E1 channels configuration before running the RTP Bridge is optional. It is set in OtxHwLayer.conf file in a case of RTP Bridge uses T1/E1 streams.

The structure of the OtxHwLayer configuration file should be composed from the parameters provided by line. Each parameter is initialized with the name and the value represented on a single line through any number of spaces.

Example: T1E1LiMode E1

The configuration file can also contain comments. The comment line begins with ‘#’ character and ends with the end of line. If you need to allocate a few lines for comment, you should put a ‘#’ character at the beginning of each line.

Example: # Line termination mode

Most of the parameters are set by default; all you need is to define a number of key parameters: the type of board (BoardType), the index of board (BoardNo), etc.

Please see the full list of configuration file parameters :

Parameter Name	Parameter Type	Possible Values
Termination	P_STRING	OTX_T1E1_TERM_120_OHM - Span is terminated for 120 ohm twisted pair (balanced differential signal) OTX_T1E1_TERM_100_OHM - Span is terminated for 100 ohm twisted pair (balanced differential signal) OTX_T1E1_TERM_75_OHM - Span is terminated for 75 ohm coax (unbalanced unipolar signal) OTX_T1E1_TERM_75_OHM_BALANCED - Span is terminated for 75 ohm balanced differential signal (for special monitoring conditions) OTX_T1E1_TERM_300_OHM - Span is terminated for 300 ohm twisted pair (balanced differential signal) OTX_T1E1_TERM_HIGHZ - Span is not terminated (Balanced, High impedance, for monitoring scenarios when short (<2 meters) monitor taps are used)
RxThreshold	P_INT	Positive integer, defaults to OTX_HWLAYER_DEFAULT_RX_THRESHOLD: 500
SetMonitorMode	P_BOOL	Boolean value - TRUE, T, 1, YES, ON, FALSE, F, 0, NO, OFF
FrontEndAmplifier	P_BOOL	Boolean value - TRUE, T, 1, YES, ON, FALSE, F, 0, NO, OFF
BoardType	P_STRING	A2 - OTX_DEVICE_DMP_ALVIS_2_CSI A2P - OTX_DEVICE_DMP_ALVIS_2_PBX A4 - OTX_DEVICE_DMP_ALVIS_4_CSI A8 - OTX_DEVICE_DMP_ALVIS_8_CSI A4M - OTX_DEVICE_DMP_ALVIS_4M_CSI A8M - OTX_DEVICE_DMP_ALVIS_8M_CSI AA - OTX_DEVICE_DMP_ALVIS
BoardNo	P_INT	The index of board, defaults to 0
T1FrameFormat	P_STRING	OTX_T1_FF_F12 OTX_T1_FF_F4 OTX_T1_FF_ESF OTX_T1_FF_F72 OTX_T1_FF_F12_J1 OTX_T1_FF_F4_J1 OTX_T1_FF_ESF_J1 OTX_T1_FF_F72_J1 OTX_T1_FF_UNFRAMED
T1LineCode	P_STRING	OTX_T1_LC_AMI OTX_T1_LC_B8ZS
E1FrameFormat	P_STRING	OTX_E1_FF_DOUBLE_FRAME OTX_E1_FF_CRC4_MULTIFRAME OTX_E1_FF_CRC4_MULTIFRAME_G706 OTX_E1_FF_UNFRAMED
E1LineCode	P_STRING	OTX_E1_LC_AMI OTX_E1_LC_HDB3
T1E1LiMode	P_STRING	T1 E1

Note: The default values are marked bold.

RTPBridgeHwLayerEx Example of OtxHwLayer.conf for Alvis-4-CSI