Call handling, Guides · 8 min read
How to transfer a call: blind vs warm transfer, hold and extensions explained
By the CallRoute team ·
Transfers are where good calls go wrong. The caller explained everything once, got passed on, and now has to explain it again, or worse, is left listening to silence before the line drops. A transfer done well is barely noticed. This guide explains the two kinds of transfer, when to use each, how hold and extensions fit in, and the words that make the hand over smooth.
Blind vs warm transfer
| Blind (cold) transfer | Warm (attended) transfer | |
|---|---|---|
| What happens | You send the caller over and leave the call | You speak to the other person first, then hand over |
| Caller experience | Fast, but they may have to repeat themselves | Smoother, the next person already knows why they called |
| Your time | A few seconds | Thirty seconds to a minute or two |
| Risk | The other person is busy or does not expect the call | A longer hold while you explain |
| Best for | Simple requests, callers asking for someone by name | Problems, complaints, VIP callers, anything complicated |
A third option sits between them: the 3 way call. You bring the other person in, all three of you talk for a moment, and then you drop off. It is the most personal introduction, and useful when the caller benefits from hearing you hand the case over.
How to do a blind transfer
- Tell the caller. "I am going to connect you with Sam in billing, who handles this. One moment."
- Start the transfer and choose the teammate, their extension, or an outside number.
- Send it. The caller hears hold music while the other phone rings, and you are free.
Use blind transfers when you are confident the other person can take the call and needs no context. If you are not sure they are free, or if the caller has already explained a complicated problem to you, use a warm transfer instead.
How to do a warm transfer
- Ask permission to hold. "Let me bring in Priya, who can sort this out. May I put you on a short hold while I explain your situation to her?"
- Start the transfer and choose to talk first. The caller is placed on hold and the other person's phone rings.
- Brief them in three lines. Who is calling, what they need, and what you have already tried or promised.
- Hand over. Complete the transfer, or merge into a 3 way call to introduce them and then leave.
- If they cannot take it, go back to the caller, explain, and offer the next best option: another person, a call back at a set time, or a voicemail.
Using hold properly
Hold is a tool, not a place to park people. A few rules keep it from annoying callers:
- Ask before you hold, and wait for a yes. "May I put you on hold for about a minute?"
- Give a reason. "While I pull up your order." People wait more patiently when they know why.
- Check back. If it runs past the time you said, come back and update them, even if only to say you need another minute.
- Thank them. "Thanks for waiting" when you return costs nothing.
- Offer a call back for anything that will take more than a few minutes.
Use hold rather than mute when you step away. Mute leaves the caller in silence, and silence feels like a dropped call. Hold plays music, which tells them they are still connected.
Extensions: the shortcut behind good transfers
An extension is a short number that reaches one person inside your phone system. Extensions make transfers and internal calls faster, because you dial four digits instead of looking someone up.
How teams use extensions
- Internal calls. Dial a coworker's extension to ask a quick question before a warm transfer.
- Dial by extension in the phone menu. Repeat callers who know the person they want can skip the menu.
- Printed on cards and email signatures. "Call 555 0100, extension 2041" gets a customer straight to you.
Keep a simple extension list where the whole team can see it, and give new hires their extension on day one. Our guide to setting up a phone menu covers where dial by extension fits.
Transferring to an outside number
Sometimes the right person is not on your team: a partner, a supplier, an on call technician on their personal phone. Most business phone systems let you transfer to any phone number. Two things to remember: tell the caller they are going to an outside party, and know that the outside leg is billed like a call you placed.
Common transfer mistakes
- Transferring without saying so. The caller hears a click and music and thinks they were hung up on.
- Transferring to the wrong person. If you are unsure who handles something, ask a colleague first with a quick internal call.
- Blind transferring a complaint. An upset caller who has to repeat their story gets more upset. Warm transfer it.
- Passing the caller around. More than one transfer is a sign something is wrong. Take ownership and call back instead.
- No plan for an unanswered transfer. Know what the caller hears if nobody picks up.
For the words to use on every part of a call, see our guide to business phone etiquette.
How transfers work in CallRoute
During a call, select Transfer and pick a teammate from the list or type an outside number. Then choose Transfer now for a blind transfer, or Talk first for a warm transfer. With Talk first, the caller hears hold music while you speak to the other person, and you can Complete transfer, Merge calls into a 3 way call, or go Back to caller. If the other person does not answer a warm transfer, you are back with the caller. If nobody picks up a blind transfer, the caller can leave a voicemail, which lands in your inbox with a transcript.
Every teammate gets a 4 digit extension when they join, and Hold plays music for the caller until you select Resume. Transfers to teammates are internal; a transfer to an outside number is billed like a call you place. Step by step instructions are in extensions and call transfers and making and receiving calls. See call routing and extensions, or start a free trial.