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Budget: 50 EUR Deadline: 1 day

Good day! I am ready to resolve the Calling Failed issue.

The situation is familiar - this error most often occurs due to incorrect role distribution (who is main and who is sub), incorrect settings of the local SIP server, or simply a mismatch of room numbers between the calling panel and the monitors.

I will connect to you via AnyDesk, we will scan the network together using the SADP Tool to ensure that all 4 devices are in the same subnet. We will access the settings through the web interface or iVMS, write the correct call routing, and make a test call.

I look forward to collaborating!

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Budget: 50 EUR Deadline: 4 days

I am ready to help you

I will send my portfolio in a private message to make sure we are a good fit for each other

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Budget: 50 EUR Deadline: 7 days

Good day, Serhiy!
The most common reason for the "Calling Failed" error in such a scheme is different registration passwords / activation passwords between monitors and calling panels or incorrect role logic main/sub between devices.

First, the register password is set, then the indoor extension is added from the main indoor station, and then the door station; after this, the call from the button of the door station should go through successfully.

The correct connection topology should be as follows:
1 monitor = Main Indoor Station
2nd monitor = Indoor Extension
1 calling panel = Main Door Station
2nd calling panel = Sub Door Station

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Budget: 50 EUR Deadline: 1 day

The Calling Failed error on your DS-KH6350 and DS-KH9510 monitors typically stems from a mismatch in the SIP server configuration or incorrect room numbering within the outdoor stations resident list. Since your hardware is already powered via PoE and visible on the network, the issue is likely a logical link failure between the indoor and outdoor units in the iVMS-4200 settings or the device web interface.
I will start by verifying that one of your outdoor stations is designated as the main SIP server and that the indoor stations are correctly registered to its IP. To give you an idea, the configuration logic looks something like this:
Main Station IP: 192.168.1.10 (SIP Server)
Sub-Monitor: 192.168.1.11 mapped to Room 1
Call Logic: Button 1 triggers Room 1 via SIP 5060
I have extensive experience with Hikvision intercom ecosystems and can quickly identify if it is a firmware conflict or a routing error. We can hop on a remote session via AnyDesk to sync these settings and test the call flow in real-time.

Looking forward to discussing your project in detail.

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