Help Guide

To use TalkVoip, you'll need a SIP account from a VoIP provider or your company's PBX system. Here's how to set it up:

• Open TalkVoip and go to Settings
• Enter your Display Name (shown to call recipients)
• Enter your Username (your SIP extension or phone number)
• Enter your Password (provided by your VoIP provider)
• Enter the Domain/Server address (e.g., sip.yourprovider.com)
• Tap Register to connect

The registration status indicator will turn green when successfully connected.

Configure your SIP server settings:

• Host: Your SIP server address (IP or domain)
• Port: Usually 5060 (UDP/TCP) or 5061 (TLS)
• Transport: Choose UDP, TCP, or TLS (encrypted)
• Auth Username: If different from your SIP username
• Outbound Proxy: Optional proxy server address

The registration indicator shows your connection status:

• Green: Successfully registered and ready to make/receive calls
• Yellow: Attempting to register or re-register
• Red: Registration failed - check your credentials and server settings
• Grey: Not registered - tap Register to connect

The Keypad tab provides a traditional phone dial pad:

• Tap numbers to enter the phone number or extension
• Use the backspace button to delete digits
• Tap the green call button to initiate the call
• Long-press 0 to enter a + for international numbers

Access your device contacts directly from TalkVoip:

• Go to the Contacts tab
• Browse or search for a contact
• Tap the contact to view their phone numbers
• Tap a phone number to call via TalkVoip

Note: TalkVoip requires contact access permission to display your contacts.

Save frequently called numbers for quick access:

• Go to the Favorites tab
• Tap + to add a new favorite
• Enter a name and number
• Tap a favorite to call instantly

TalkVoip uses CallKit for native iOS call integration:

• Incoming calls appear like regular phone calls
• Answer calls from the lock screen
• Caller ID displays the caller's name and number
• Swipe to answer or decline

TalkVoip uses VoIP push notifications (PushKit) to receive calls even when the app is closed:

• Ensure notifications are enabled in iOS Settings
• The app will wake automatically for incoming calls
• Push token is sent to your SIP server for remote wake-up

Note: Your SIP provider must support push notifications for this feature.

Available controls during an active call:

• Mute: Mute your microphone
• Speaker: Switch to speakerphone
• Hold: Place the call on hold
• Keypad: Send DTMF tones (for IVR menus)
• End: Hang up the call

Place a call on hold and resume:

• Tap Hold during an active call
• The caller will hear hold music (if configured on your PBX)
• Tap Resume to continue the call

Busy Lamp Field (BLF) keys allow quick call pickup and extension monitoring:

• Enable BLF Keys in Settings to show the BLF panel
• Configure your start and end slot range (default: 71-78)
• Tap a BLF key to pick up a call on that slot
• Use the manual slot entry for custom pickup codes

BLF keys integrate with your PBX's directed call pickup feature.

Send touch-tones during a call to navigate phone menus:

• Tap Keypad during an active call
• Tap the numbers to send DTMF tones
• Use * and # for special options

DTMF is essential for interacting with AI IVR systems and automated attendants.

Choose the transport protocol for SIP signaling:

• UDP: Fast, lightweight, default for most providers
• TCP: Reliable delivery, good for poor networks
• TLS: Encrypted signaling (port 5061), recommended for security

For maximum security, use TLS transport with SRTP audio encryption.

STUN helps with NAT traversal when behind a firewall:

• Enter a STUN server address (e.g., stun.l.google.com:19302)
• STUN discovers your public IP for proper call routing
• Most providers offer their own STUN servers

If you're having one-way audio issues, ensure STUN is configured correctly.

Fine-tune your registration behavior:

• Registration Expiry: How often to re-register (default: 300 seconds)
• Force Cellular: Use cellular data instead of Wi-Fi

If registration fails, check the following:

• Verify your username and password are correct
• Confirm the server address and port
• Try a different transport (UDP/TCP/TLS)
• Check if your IP is blocked by the provider
• Ensure you have internet connectivity
• Contact your VoIP provider for account status

Audio issues are often caused by NAT or firewall problems:

• Configure a STUN server in settings
• Try switching between Wi-Fi and cellular
• Ask your provider about ICE/TURN support
• Check that your firewall allows RTP traffic (UDP ports 10000-20000)

If calls are dropping unexpectedly:

• Check your internet connection stability
• Increase the registration expiry time
• Try a different transport protocol
• Disable Wi-Fi assist in iOS settings

To improve audio quality:

• Use a stable Wi-Fi connection when possible
• Close other bandwidth-heavy apps
• Move closer to your Wi-Fi router
• Check for network congestion