How to Transfer Calls on IP Phones

Many businesses use IP desktop phones connected to VoIP telephony, combining traditional office setups with modern communication infrastructure. IP phones support all standard VoIP call transfer features, including blind and attended transfers, while keeping the familiar desk phone experience.

This article covers how VoIP call transfer works in Zadarma, including IP phone call transfers to extensions and voice menus, and what to do when your phone lacks a transfer button or the button isn't working.

• Zadarma call transfer
• Blind & Attended transfers
• Call transfer on Yealink T27G
• Call transfer on Yealink T3X/T4X/T5X/T53X/T54W/T57W
• Call transfer on Cisco SPA 300 Series
• Call transfer on Cisco 8811, 8841, 8851, 8851NR, and 8861
• Call transfer on Grandstream GXP2130/2140/2160/2135/2170
• Call transfer on Fanvil X4G
• Call transfer on Snom D725
• Call transfer on Poly VVX Series (VVX 250, VVX 350, VVX 450)
• FAQs

Zadarma call transfer

Zadarma doesn't supply IP phones, but its apps for Windows, Android, iOS, and macOS include built-in call transfer functionality. There's also a universal key combination that works on any app or IP phone connected to Zadarma.

Blind & Attended transfers

There are two types of call transfers: blind transfer and attended transfer.

A blind transfer sends the call directly to the selected user. With this type of transfer, the recipient does not receive any indication that the call has been transferred. It appears on their phone as a regular incoming call.

An attended transfer allows you to first connect with another extension before transferring the call. This lets you pass on any necessary information, confirm that the transfer is appropriate, or make sure the recipient is available and ready to take the call.

Blind transfer (cold transfer)

To transfer a call without prior notification, dial:

#extension#

Example: #101#

Attended transfer

To transfer a call with prior notification to the recipient, dial:

*extension#

Example: *101#

Transfer to a voice menu or department

For incoming calls, dial #scenario_number# to transfer the call to a specific department or voice menu scenario, for example #1#.

The same combination during an outgoing call routes it to the voice menu with that ID.

The following guides cover call transfer for the most common IP phones used with Zadarma.

Call transfer on Yealink T27G

Blind transfer

1. Answer a call or make an outgoing call.
2. Press the Transfer (Tran) soft key. The call is placed on hold.
3. Enter the extension you want to transfer to.
4. Press the B Trans (BlindTrnf) soft key to complete the transfer.

Attended transfer

1. Answer a call or make an outgoing call.
2. Press the Transfer (Tran) soft key.
3. Enter the extension you want to transfer to, then press Send.
4. Talk to your colleague.
5. Press the Transfer (Tran) soft key again to complete the transfer.

Call transfer on Yealink T3X/T4X/T5X/T53X/T54W/T57W

Blind transfer

1. Answer a call or make an outgoing call.
2. Press the TRAN/TRANSFER key or Transfer (Trans).
3. Enter the extension you want to transfer to.
4. Press B Transfer (B Trans) or TRAN/TRANSFER to complete the transfer.

Attended transfer

1. Answer a call or make an outgoing call.
2. Press the TRAN/TRANSFER key or Transfer (Trans).
3. Enter the extension and press Send.
4. Talk to your colleague.
5. Press B Transfer (B Trans) or TRAN/TRANSFER again.

Call transfer on Cisco SPA 300 Series

Blind transfer

1. Answer a call or make an outgoing call.
2. Press the bXfer soft key.
3. Enter the extension you want to transfer to.
4. Press Dial.

Attended transfer

1. Answer a call or make an outgoing call.
2. Press the xfer soft key.
3. Enter the extension and press Dial.
4. Talk to your colleague.
5. Press xfer again to complete the transfer.

Call transfer on Cisco 8811, 8841, 8851, 8851NR, and 8861

Blind transfer

1. Answer a call or make an outgoing call.
2. Press Transfer.
3. Enter the extension you want to transfer to.
4. Press Transfer again.

Attended transfer

1. Answer a call or make an outgoing call.
2. Press Transfer.
3. Enter the extension you want to transfer to.
4. Press Call and talk to your colleague.
5. Press Transfer again.

Call transfer on Grandstream GXP2130/2140/2160/2135/2170

Blind transfer

1. Answer a call or make an outgoing call.
2. Press the Transfer (Tran) key.
3. Dial the extension you want to transfer to.
4. Press Send (or BlindTrnf) to complete the transfer.

Attended transfer (static mode)

1. Answer a call or make an outgoing call.
2. Press an available Line key.
3. Dial the extension and establish the second call.
4. Talk to your colleague.
5. Press Transfer, then press the Line key of the held call.

Call transfer on Fanvil X4G

Blind transfer

1. Answer a call or make an outgoing call.
2. Press XFER.
3. Enter the extension.
4. Press XFER again.

Attended transfer

1. Answer a call or make an outgoing call.
2. Press XFER.
3. Enter the extension.
4. Press Dial and talk to your colleague.
5. Press XFER again.

Call transfer on Snom D725

Blind transfer

1. Answer a call or make an outgoing call.
2. Press the Transfer key or select Xfer.
3. Enter the extension.
4. Press the Tick button.

Attended transfer

1. Answer a call or make an outgoing call.
2. Press the Hold key.
3. Enter the extension and press Tick.
4. Talk to your colleague.
5. Press Transfer or Xfer.

Call transfer on Poly VVX Series (VVX 250, VVX 350, VVX 450)

Blind transfer

1. Answer a call or make an outgoing call.
2. Press Transfer and select Blind.
3. Enter the extension or select a contact.
4. The call is transferred immediately.

Attended (consultative) transfer

1. Answer a call or make an outgoing call.
2. Press Transfer.
3. Enter the extension or select a contact.
4. Talk to your colleague.
5. Press Transfer again or place the handset back in the cradle.

Note: The default transfer type on Poly VVX phones can be configured as either Blind or Consultative. To change it, go to Settings > Basic > Preferences > Default Transfer Type.

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FAQs

Can I use desk phones with Zadarma?

Yes. Any desk phone that supports the SIP protocol works with Zadarma.

Do I need a dedicated transfer button to transfer calls?

No. Zadarma's key combinations work on any connected IP phone or app, regardless of whether it has a physical transfer button.

What is the difference between blind and warm transfer?

Blind transfer connects the caller to the destination immediately without prior notification. Warm transfer (also called attended or consultative transfer) allows you to speak with the recipient first before transferring the call.

Can I transfer a call to a voice menu, not just an extension?

Yes. Incoming calls can be transferred to a voice menu scenario or department by dialling #scenario_number#, for example #1#. The same combination works during outgoing calls.

Do all IP phones transfer calls the same way?

No. The exact process varies depending on the phone model. Yealink, Cisco, Grandstream, Fanvil, Snom, and Poly devices all use different buttons and transfer procedures.