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Call

extension Call

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Methods

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iceRestart(completion:)

public func iceRestart(completion: @escaping (_ success: Bool, _ error: Error?) -> Void)

• Parameter completion: Callback indicating success or failure of the ICE restart

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Parameters

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hangup()

public func hangup()

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Example:

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answer(customHeaders:debug:)

public func answer(customHeaders:[String:String] = [:], debug:Bool = false)

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Examples:

// Basic answer
call.answer()

// Answer with custom headers
call.answer(customHeaders: ["X-Custom-Header": "Value"])

// Answer with debug mode
call.answer(debug: true)

• Parameters:
  • customHeaders: (optional) Custom Headers to be passed over webRTC Messages. Headers should be in the format X-key:Value where X- prefix is required for custom headers. When calling AI Agents, headers with the X- prefix will be mapped to dynamic variables (e.g., X-Account-Number becomes {{account_number}}). Hyphens in header names are converted to underscores in variable names.
  • debug: (optional) Enable debug mode for call quality metrics and WebRTC statistics. When enabled, real-time call quality metrics will be available through the onCallQualityChange callback.

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Parameters

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dtmf(dtmf:)

public func dtmf(dtmf: String)

• Parameter dtmf: A string containing a single DTMF character. Valid characters are:
  • Digits: 0-9
  • Special characters: * (asterisk), # (pound)
  • Letters: A-D (less commonly used)

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Examples:

// Navigate an IVR menu
currentCall?.dtmf("1")    // Select option 1
currentCall?.dtmf("0")    // Select option 0

// Special characters
currentCall?.dtmf("*")    // Send asterisk
currentCall?.dtmf("#")    // Send pound/hash

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Parameters

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muteAudio()

public func muteAudio()

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Example:

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unmuteAudio()

public func unmuteAudio()

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Example:

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resetAudioDevice()

public func resetAudioDevice()

• AudioDeviceModule buffers stretch under poor network conditions
• WebRTC audio pacing causes frame accumulation
• iOS AudioUnit/AVAudioSession remains in large buffer state

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Example:

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hold()

public func hold()

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Example:

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unhold()

public func unhold()

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Example:

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toggleHold()

public func toggleHold()

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Example: