DS-KH8520 master rings, KH6320 indoor extensions do NOT ring (live view works) – Private Protocol

[Hawk020]

Title: DS-KH8520 master rings, KH6320 indoor extensions do NOT ring (live view works) – Private Protocol

Hi all,

I’m troubleshooting a Hikvision villa intercom system and I suspect I’m missing something simple in indoor-extension registration/binding.

Setup

Master indoor station:

• DS-KH8520-WTE1
• IP: 192.168.100.14
• Firmware: V2.1.2 build 191118
• Private Protocol enabled
• Room/Call No.: 1
• Floor No.: 1

Indoor extensions:

1. DS-KH6320-TE1/EU
IP: 192.168.100.13
FW: V2.1.2 build 191118
Type: Indoor Extension
Extension No: 1
Main Indoor Station IP: 192.168.100.14

2. DS-KH6320-WTE1
IP: 192.168.100.15
FW: V2.1.2 build 200528
Type: Indoor Extension
Extension No: 3
Main Indoor Station IP: 192.168.100.14

3. DS-KH6320-WTE1
IP: 192.168.100.17
FW: V2.1.2 build 200528
Type: Indoor Extension
Extension No: 5
Main Indoor Station IP: 192.168.100.14

Door station:

• DS-KD8003-IME1/EU
• IP: 192.168.100.18
• FW: V2.0.8 build 191120
• Main station IP: 192.168.100.14
• Private Protocol

Problem

Only the master (.14) rings when someone presses the doorbell.

Indoor extensions (.13 / .15 / .17) do NOT ring at all.

However:

• Live view from the door station works on all indoor extensions
• All devices are online and reachable
• Ping works
• Same subnet / static IPs
• Door station rings master perfectly
• Extensions are configured as Indoor Extension
• Main Indoor Station IP on all extensions = 192.168.100.14

Important observations

• Master device management sees the door station (.18), but indoor extensions do not show up as related devices
• Wizard on master only finds the door station
• Auto-search on indoor stations shows devices with status “Activate”, but not clearly registered
• Rebooting all indoor extensions changed nothing
• Online firmware update failed with: “No available upgrade package found”
• Internal dialing tests (0-1 / 0-3 etc.) failed with messages about number/host-IP conflicts

Questions

1. In a KH8520 + KH6320 Private Protocol setup, should the master explicitly contain an indoor extension list / registration table for .13/.15/.17?

2. Is it normal that an extension only shows:
“Main Indoor Station = 192.168.100.14”
or should the master also explicitly register every extension?

3. Does this sound like:

• missing indoor-extension registration/binding on the master,
• room/call numbering mismatch,
• call linkage/group setting,
• firmware incompatibility,
• or something obvious in KH8520 private protocol setups?

I’m intentionally NOT resetting, changing passwords, removing devices, switching protocol, or changing firmware before understanding the root cause.

Any installer insight would be highly appreciated.

 

[trempa92]

I would start by gradually updating entire system

Door station to 2.2.62 build from 24´

and indoor stations to 2.2.108

Then all it should work stable

 

[Hawk020]

Question:

Given that firmware is updated and the wizard detects the devices but registration is not persistent, what should be the next engineering step? Would you recommend factory reset of the master (.14) only, or is there another registration/authentication step we are missing?



Status update Hikvision intercom – second opinion requested

Setup:

• Master indoor station: DS-KH8520-WTE1 (.14)
• Door station: DS-KD8003-IME1/EU (.18)
• Indoor extensions: DS-KH6320 (.13 / .15 / .17)
• Static IP network (192.168.100.x), Private Protocol

Original problem:

• Doorbell only rang on master (.14)
• Extensions (.13/.15/.17) never rang
• Internal calls between indoor stations failed
• Master showed warning: “Door station not responding / check IP”
• “Indoor extensions” list remained empty

What we checked / ruled out:

• All devices online and reachable
• Network and IP configuration OK
• Extensions correctly configured as Indoor Extension with Main Indoor IP = .14
• Door station button correctly mapped to Room 1
• Wizard detects all indoor extensions (.13/.15/.17)

What we already did:

1. Updated door station firmware:
- DS-KD8003-IME1/EU
- From: V2.0.8 build 191120
- To: V2.2.62 build 241008
2. Rebooted .18 (door station) and .14 (master)
3. Ran wizard again on master
4. Wizard successfully detected and allowed selection of all three indoor extensions (.13/.15/.17)
5. Wizard reported success (“configured”)

Current issue:

• After successful wizard completion, “Indoor Extension” list on master is still empty
• Extensions are detected but do not persist/register
• Door station still appears as “Activate” and warning remains
• Doorbell call still fails / only master behavior inconsistent

Question:
Given that firmware is updated and the wizard detects the devices but registration is not persistent, what should be the next engineering step? Would you recommend factory reset of the master (.14) only, or is there another registration/authentication step we are missing?

 

[trempa92]

I would do a factory restore on all of the devices after such huge firmware jump.

After setting extension settings with master IP and registration password. It should auto register on master.