New modem command for FDPS to allow custom configurations of DSL modem settings to ensure DSL interoperability in different environments. Please consult your Service Provider on required modem settings (if any) for the particular SP's network.
1. How to check if FDPS is Supported by the VDSL Controller?
router# sh controller VDSL 0 console ?
<1-22197> Available console buffer size
router# sh controller VDSL 0 console 22197
Custom UK Annex M Mask NOT SET
Disable V43 CLEAR
Enable FDPS NOT SET
UKFeatureBit CLEAR
Enable GinpDsSupport
Enable GinpUsSupport
Enable MonitorTone
Enable FireDsSupport
Enable FireUsSupport
Bit CLEAR
Bit CLEAR
HBI Bit CLEAR
Chan Policy Bit CLEAR
dsattn CLEAR
dsattn CLEAR
CO5 Flag CLEAR
Note: Be sure that you use the latest IOS Software and Very High Bitrate DSL (VDSL) Firmware to Enable FDPS.
2. FDPS Enable or Disable
Before you enable the modem settings, you must execute the "service internal" command in CONFIG mode. For example:
router# conf t
Enter configuration commands, one per line. End with CNTL/Z.
router(config)# service internal
router(config)# end
Default is FDPS disabled.
ENABLE FDPS
router# conf t
Enter configuration commands, one per line. End with CNTL/Z.
router(config)# controller VDSL 0
router(config-controller)# modem enableFDPS
router(config-controller)# end
Note: Reload the router after setting or unsetting this command.
DISABLE FDPS
router# conf t
Enter configuration commands, one per line. End with CNTL/Z.
router(config)# controller VDSL 0
router(config-controller)# no modem enableFDPS
router(config-controller)# end
Note: Reload the router after setting or unsetting this command.
3. FDPS Verification
FDPS enable
router# sh controller VDSL 0 console ?
<1-22197> Available console buffer size
router# show controllers VDSL 0 console 22197 | inc Enable FDPS SET
Enable FDPS SET
router#test vdsl 0 modem exec xdslctl info --cfg
vdslCfgFlagsMask: 03210404
vdslCfgFlagsValue: 03210004
FDPS disable
router# sh controller VDSL 0 console ?
<1-22197> Available console buffer size
router# show controllers VDSL 0 console 22197 | inc Enable FDPS NOT SET
Enable FDPS NOT SET
router#test vdsl 0 modem exec xdslctl info --cfg
vdslCfgFlagsMask: 01210404
vdslCfgFlagsValue: 01210004
4. Additional Information ITU-T G.993.5
G.993.5 : Self-FEXT cancellation (vectoring) for use with VDSL2 transceivers
https://www.itu.int/rec/T-REC-G.993.5-202003-I!Cor1/en
Download PDF "Recommendation G.993.5 (2019) Corrigendum 1 (03/20) (English)"
https://www.itu.int/rec/dologin.asp?lang=e&id=T-REC-G.993.5-202003-I!Cor1!PDF-E&type=items
