3Com 3031 Command Reference Manual page 307

Frame Relay Configuration Commands 307
undo fr iphc { nonstandard | rtp-connections number1 | tcp-connections number2
| tcp-include }
View
Frame relay interface view and MFR interface view
Parameter
nonstandard: Nonstandard compatible compression format.
rtp-connections number1: The number of RTP compression connections, ranging
from 3 to 255. By default, the number of RTP compression connections is 256.
tcp-connections number2: The number of TCP compression connections, ranging
from 3 to 255. By default, the number of TCP compression connections is 256.
tcp-include: Includes TCP header compression when performing RTP compression.
Description
Using the fr iphc command, you can enable IP header compression function,
including RTP/TCP header compression. Using the undo fr iphc command, you can
disable this function.
For the related configuration, see fr map ip.
Example
Configure the number of RTP compression connections as 200 on the frame relay
Serial1/0/0.
[3Com-Serial1/0/0] fr iphc rtp-connections 200
fr lmi n391dte
Syntax
fr lmi n391dte n391-value
undo fr lmi n391dte
View
Interface view
Parameter
Status counter of the PVC. The range of the value is 1 to 255.
Description
Using the fr lmi n391dte command, you can configure N391 parameter at the DTE
side. Using the undo fr lmi n391dte command, you can restore the default value.
By default, its value is 6.