Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[andyfitter]

Hi. There has been mentioned recently that when a DLM reset is carried out on a Huawei cab you are put on an INP of 3 and not an open profile. This doesn’t seem to be the case for me?

Mdws user andyf

I recently moved from BT 80/20 to Sky 80/20, on a Huawei cabinet. Never had xdB but had G.inp with BT. HG612 initially.

I’ll outline the key dates shown on mdws:

December 19th. Still with BT but reconfigured router for sky connection as I was going to be away for 2 weeks. Connection still synced but no mdws upload as no connection

December 27th. Migration happens. Line reset. INP 0, INT 1

December 29th DLM intervention, INT and INP increased.

January 6th. Return home to discover no voice service. Fault raised.

January 9th. Engineer fixes voice fault and does another reset. INT 1, INP 0

January 10th. Switched to Zyxel VMG1312 B10A

This is where it has been ever since.

Any thoughts?

[burakkucat]

Any thoughts?

I think we had decided, via many observations, that there appears to be two types of DLM reset --

• The full, hard, reset as a result of a technician fixing a circuit fault. A "circuit recalc" in Openreach speak -- where the circuit is put on a wide open profile as if it was a new provision.
• The softer type reset -- where the circuit is reverted to a non wide open profile.

[kitz]

I can only confirm b*cats post.

Type 1 is for new provisions or can only be performed by an Openreach Engineer after finding and fixing a fault.
Type 2 (System reset). Performed remotely or via a DLM change. 

Type 2 is newer and only came into effect after G.INP came into effect on the Huawei cabs. 

Ian Lawrence mentions it here.

Initially, low interleaving is enabled by default on all retransmission lines. Once DLM has positively identified that the modem supports retransmission then retransmission is enabled.

From observation Type 2 doesn't/didn't always remove interleaving, but according to information passed on the the ISPs for the new trial, this new method should reset the caution counters which should [in theory] also remove any banding.