The phrase "a safe channel" is correct and usable in written English.
It can be used to refer to a secure means of communication or transmission of information.
Example: "To ensure the confidentiality of our discussions, we should use a safe channel for all sensitive communications."
Alternatives: "secure channel" or "protected channel".
"They have a strong position, and they are considered a safe channel".
He escaped by clambering over a would-be escapee whose dead body provided a safe channel through an electrified wire fence.
John Crane, former head of the Pentagon's whistleblower unit, revealed this week that instead of providing a safe channel for government employees to report internal wrongdoing, the system actively retaliates against them for daring to sound the alarm.
There exists among yachtsmen a mnemonic aid that goes "Red right returning" by means of which the sailor reminds himself that on approaching a harbor from the sea he remains in a safe channel by keeping red buoys on his right & black buoys on his left.
And what Zendo provided is that you meet in person, you do the exchange, and then you have a safe channel so there's much less risk than another [messaging] app".
He notes there's not really a safe channel which allows kids to have online conversations with other family members, because email is too complicated for FamJam's target users (ages 4-9) and it doesn't offer parental controls.
To enable safe passage of ships, a 'friendly safe channel' was created through the minefields.
He is a kind of river pilot who knows how to steer ships past dangerous currents and hazardous shallows, keeping them in a deep and safe channel.
Rather than post a gunboat near the safe channel as they had in days previous, lighted buoys were used to guide boats through.
For a time, both parties opened safe channels inside the institutions for a growing culture of non-government organizations that specialized in advocacy before judges and regulators, and lobbying politicians whose staffs they sometimes joined.
Creating safe channels for refugees and organising migration routes, not building fences, may be a better way.
