Main menu (auto attendant)
The greeting and the options. It sorts callers by intent: sales, service, accounts, a specific person. Two to four options is the practical range.
Routing design
Every call should have a plan before it rings.
Call routing is the set of rules between a caller dialling your number and a person saying hello. Get it right and callers reach the right department first time; get it wrong and every call is a transfer.
ExampleView all team
Business number
+1 (416) 555-0198
Main numberActive call 00:24
IN
Inbound caller
+1 (905) 555-0142
Mute
Keypad
Hold
Add
End
Transfer call
Select a team member or department
Search people or teams
- Sales teamExt. 202
- Customer supportExt. 204
Your team
RC
ReceptionExt. 201
AvailableS1
Sales 1Ext. 202
On a callS2
Sales 2Ext. 203
AvailableSD
Service deskExt. 204
AvailableOM
Office managerExt. 205
In a meetingBusiness call routing is the set of rules that decides where an incoming call goes: which greeting plays, which menu options are offered, which people or departments ring, in what order, and what happens if nobody answers. It combines a main menu, ring groups or queues, overflow rules and time-of-day schedules. 3CTel designs and configures these rules with you, then tests them on a temporary number before go-live.
The five building blocks
Almost every routing plan, from a three-person shop to a fifty-agent desk, is assembled from the same five parts. Knowing what each one does makes the design conversation short.
Department routing
Each menu option, or each direct number, lands on a department. A department is a group of people plus the rules for how they ring.
Ring groups
Ring several people at once, or one after another, for a set number of seconds. Simple, fast and right for small teams where anyone can answer.
Call queues
Hold callers in order, play position or hold music, and deliver each call to the next available agent. Right for teams that get more calls than they can answer at once.
Time-of-day rules
Different paths for open hours, lunch, evenings, weekends and holidays. Every other block can behave differently depending on when the call arrives.
Auto attendant
A recorded greeting that answers the main number and lets callers pick a destination or dial an extension.
Learn more: Auto attendantRing group
One incoming call rings several phones at once or in sequence; the first to pick up takes it.
Learn more: Ring groupCall queue
Callers wait in order and are delivered one at a time to the next free agent.
Learn more: Call queueCall routing
The rules that decide where each incoming call goes and what happens when nobody answers.
Learn more: Call routingRing group or queue: choosing correctly
The most common routing question is whether a department should be a ring group or a queue. The answer depends on how often more callers arrive than there are people to answer.
If a second call while the first is still ringing is rare, use a ring group: everyone rings, the first free person answers, and an unanswered call goes to a fallback. If simultaneous calls are normal, use a queue: callers hold in order, hear their position, and are delivered one at a time, with a callback offered when the wait grows.
- Ring group: small teams, low simultaneous volume, no reporting required beyond missed calls.
- Queue: support desks, order lines, anywhere callers regularly wait; reporting on wait times and abandonment is available.
- Both: a ring group for the front desk with overflow into a queue when the group is busy is a frequent pattern.
A worked routing example
Illustrative rules for a twelve-person distribution business with a sales team, a customer service desk and a warehouse. Each row is one rule: the condition on the left, the outcome on the right.
| When | Then |
|---|---|
| Main number, Monday to Friday 8:00 to 17:00 | Greeting → press 1 sales, 2 customer service, 3 warehouse, 0 or stay on the line for reception |
| Caller presses 1 (sales) | Ring group: three sales reps ring together for 25 seconds → overflow to the sales manager → voicemail to email |
| Caller presses 2 (customer service) | Queue: four agents, longest-idle first, position announcement every 45 seconds → callback offered after 2 minutes |
| Caller presses 3 (warehouse) | Ring group: warehouse desk phone and the supervisor's mobile app → voicemail to email with transcript |
| Caller stays on the line | Reception extension for 20 seconds → overflow to the customer service queue |
| Customer service queue has no agents signed in | Skip the queue → AI receptionist takes the details and creates a callback |
| 12:00 to 13:00 weekdays | Sales and warehouse ring groups also include the reception extension so lunch coverage is shared |
| After 17:00, weekends and statutory holidays | Closed greeting → press 1 for the on-call number (urgent orders) → otherwise AI receptionist or voicemail |
| Caller dials a direct extension | That person rings for 20 seconds → their personal fallback (colleague or voicemail) |
Overflow: the rule people forget
Every destination in a routing plan needs an answer to 'and if they do not pick up?'. That answer is the overflow rule; leaving it blank is how calls ring forever or drop.
Set a ring time for every group
Twenty to thirty seconds is typical. Longer than that and callers hang up; shorter and people cannot reach their phone.
Choose the next destination
Another group, a manager's extension, a queue, the AI receptionist or voicemail. Each is a legitimate choice; 'nothing' is not.
Chain at most twice
Group → manager → voicemail is fine. Four hops is a caller who has been ringing for two minutes and is now annoyed.
Treat empty queues differently
A queue with no agents signed in should skip straight to the fallback rather than holding a caller for nobody.
AI agents in your call routing
AI does not replace the building blocks above; it becomes one of them. The AI Receptionist sits at the front of the flow or at the overflow point, resolving routine calls and handing the rest to a queue with the reason already captured. AI communication optimization then reviews the routing you built against real call data and proposes adjustments, which you approve before anything changes.
AI Receptionist as a routing step
Place the AI Receptionist before the menu to answer common questions, or after the ring group as overflow. It identifies intent, transfers with context or books a callback into the right team’s queue.
Routing recommendations you approve
AI communication optimization studies where calls wait, abandon or bounce between groups, recommends changes to ring times, overflow paths and callback thresholds, and estimates the effect of each before you apply it.
Every routed call logged where it belongs
After the call, an AI workflow logs the summary against the right contact and department in your CRM or helpdesk and schedules the callback the agent promised, in the approval mode you choose.
AI at 3CTel
AI agents, messaging, workflows, answers and insight on one phone system, with a person always available.
Learn more: AI at 3CTelAI Receptionist
Answers, understands and books — in English and French.
Learn more: AI ReceptionistAI Communication Optimization
Continuous AI review of your calls, queues, messages and line costs, with recommended changes applied only with your approval and reviewed monthly with a specialist.
Learn more: AI Communication OptimizationRouting questions we hear most
Can calls be routed by the caller's number or area code?
Yes. Rules can look at the calling number and send known customers to their account manager, send callers from a particular region to the nearest branch, or bypass the menu for a VIP list. These rules sit in front of the main menu and are configured with 3CTel during planning, using lists you maintain.
What is the difference between an IVR and an auto attendant?
In everyday business use they are the same thing: a recorded menu that routes callers by keypress. Strictly, an IVR can also collect information such as an account number and look it up before routing, while an auto attendant only routes. Most businesses need the simpler auto attendant; an IVR is used where callers must identify themselves first.
IVR (Interactive Voice Response)
A phone menu that responds to keypad presses or spoken choices before a person answers.
Learn more: IVR (Interactive Voice Response)Auto attendant
A recorded greeting that answers the main number and lets callers pick a destination or dial an extension.
Learn more: Auto attendantRelated pages.
Call routing
The rules that decide where each incoming call goes and what happens when nobody answers.
Learn more: Call routingRing groups vs call queues
Two ways to share incoming calls, and the team size where one turns into the other.
Learn more: Ring groups vs call queuesBusiness Phone
Reliable calling with routing your team will actually use.
Learn more: Business PhoneContact Centre
Queues, routing and supervision for teams that live on the phone.
Learn more: Contact CentreAI Receptionist
Answers, understands and books — in English and French.
Learn more: AI ReceptionistCall Analytics
See what your phone traffic is actually doing — and staff for it.
Learn more: Call AnalyticsFrequently asked questions.
Yes. Ring times, group membership, hours and greetings are edited in the console by your administrator. Larger changes, such as a new department structure, can be made by 3CTel on request.
Yes. Menu options and in-queue options can include 'press star to leave a message', and the message is delivered to email with a transcript.
A holiday calendar is set once, with the dates your business closes, and overrides the normal weekday schedule on those dates. Different provinces' holidays can be set for different sites.
Yes. Call analytics show calls by menu option, answered and missed calls per group, and queue wait and abandonment times, so you can see which rules need adjusting.
Draw your call flow with a specialist.
Bring your departments, your hours and your busiest hour of the week. We will turn it into routing rules, build it on a test number and let you hear it before anything goes live.