Voice for developers
Create calls from your application or connect your phone system. Build call flows in Bird’s visual sequence editor.
Trusted every day by teams that
build world-class software.
Your phone system.
Connected through Bird.
Bring your PBX or SIP client. Set the direction, authenticate the connection,
and choose where calls can go.
Harbor SIP trunk
From
Your phone system
PBX or SIP client
Through Bird
Bird SIP trunk
TLS signaling · 5061
To
Customer phone
+44 20 7946 0188
Outbound calls
Use the SIP domain assigned to your trunk.Your client places the call over SIP. Bird applies the trunk and account policies.
Harbor SIP trunk
From
Your phone system
PBX or SIP client
Through Bird
Bird SIP trunk
TLS signaling · 5061
To
Customer phone
+44 20 7946 0188
Outbound calls
Your client places the call over SIP. Bird applies the trunk and account policies.
Your calls. In your workflow.
Read current call activity from your app or agent. Inspect call records with MCP, CLI, SDKs or REST.
Can you check which calls are active right now and tell me which are connected and which are still ringing?
Bird MCP
4 connected actionsworkspace_get
Readyvoice_legs_list
2 callsvoice_legs_get
In progressvoice_legs_get
RingingLive
2| Status | To | Elapsed |
|---|---|---|
In progress | +1 415 555 0100 | 9s |
Ringing | +1 415 555 0182 | 4s |
2 active calls
1 in progress · 1 ringing
Can you check which calls are active right now and tell me which are connected and which are still ringing?
Bird MCP
4 connected actionsworkspace_get
Readyvoice_legs_list
2 callsvoice_legs_get
In progressvoice_legs_get
RingingLive
2| Status | To | Elapsed |
|---|---|---|
In progress | +1 415 555 0100 | 9s |
Ringing | +1 415 555 0182 | 4s |
2 active calls
1 in progress · 1 ringing
A clear path.
For every caller.
Build greetings and keypad choices in Bird’s visual sequence editor, then preview, test and publish your flow. Try 1 or 2 in this example to follow a branch.
Say text
Welcome to Harbor
Welcome to Harbor. For opening hours, press 1. For collection details, press 2.
Gather digits
How can we help?
Keypad input
Say text
Opening hours
We’re open today from ten until six. We’d love to see you.
Say text
Collection details
Your collection is ready. Bring your order number when you visit.
Harbor
00:06
Gather digits
How can we help?
Keypad input
Say text
Collection details
Your collection is ready. Bring your order number when you visit.
Harbor
00:06
Every call.
A reason you can inspect.
See when a call rang, when it connected, and how it ended.
Keep answered time separate from the total duration.
+44 20 7946 0188
Call activity
6s ringing · 36s connectedAudio quality
- Jitter
- 12 ms
- Packet loss
- 0.10%
- Round trip
- 86 ms
Billing
Billable time is measured from when the call is answered until it ends. Unanswered calls are not billable.
+44 20 7946 0188
Call activity
6s ringing · 36s connectedAudio quality
- Jitter
- 12 ms
- Packet loss
- 0.10%
- Round trip
- 86 ms
Billing
Call volume.
With the context behind it.
Follow answer rates to a specific destination.
Call volume and answer rate
21 Sept · UTC- Calls
- 5'614
- Answered
- 4'782
- Answer rate
- 85.2%
United States · unanswered share
90 of 121 unanswered calls in this hour
By destination
Unanswered / calls
Call volume and answer rate
21 Sept · UTC- Calls
- 5'614
- Answered
- 4'782
- Answer rate
- 85.2%
United States · unanswered share
90 of 121 unanswered calls in this hour
By destination
Unanswered / calls
Explore Voice.
From your first connection to the complete call flow. Explore the details.
Create outbound calls with a published or inline sequence, then inspect the telephone outcome.
Call sequencesBuild prompts, keypad choices and branches in the dashboard. Preview, test and publish the flow.
SIP trunkingConnect your phone system to the telephone network.
Incoming callsRoute calls to the right destination.
Browser phoneMake a call directly from the dashboard.
RecordingsFind and play recordings from your call workflows.
Caller IDsVerify the identity customers see when you call.
Global callingPrepare destinations and limits before placing calls.
Call logsUnderstand how a call started, connected and ended.
WebhooksLet your application follow the call lifecycle.
Scale without
losing control.
Organize teams in workspaces, control API access, and trace changes through audit logs.
Organization
Harbor
Access stays in its workspace.
Production/API keys
Voice agent
ActiveAlex Lee
Admin
Today · UTC
Audit log
Organization
Harbor
Access stays in its workspace.
Production/API keys
Voice agent
ActiveAlex Lee
Admin
Today · UTC
Audit log
Organization
Harbor
Access stays in its workspace.
Production/API keys
Voice agent
ActiveAlex Lee
Admin
Today · UTC
Audit log