VS-2400S 24 Ports VDSL2 Managed IP DSLAM with POTS splitter USER
’S MANUAL Ver.A3
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7. Question:
Sometimes the CPE lose the connection to DSLAM.
Cause:
Due to heavy noise of field environment or phone wiring does not meet specifications.
Solution:
1. We strong recommend all VDSL2 ports must use
24
gauge with twisted pair phone wiring.
2. Please replace the head of RJ11 wiring, if it has been oxidized or damaged.
3. Using phone cable must be stretched straight, without using reel phone cable, this will cause heavy
crosstalk noise.
4. If port link problem, please change band profile to long reach mode as 12a or 8d AnnexB.
8. Question:
Sometimes the IP DSLAM unstable.
Cause:
Due to heavy noise or impulse noise of field environment caused unstable.
Solution:
1. If VS-2400S hangs up, please enable broadcast strom function, please refer to section 4.2.1.2.
2. If CPE happened sync issue, please adjust interleave delay time to anti-noise, please refer to section 5.2
3. Enable INP(impulse noise protection) to 8 or above and enable "Force INP" for preventing impulse noise.
Notes:
1. Please note that enable interleave delay function will reduce a few vdsl2 bandwidth.
2. Interleave delay value must greater than or equal to INP value, otherwise VDSL2 will not establish a
connection.
3. Please note you must deactivate then activate once on config port when you adjust INP and interleave
dalay value.
