Quick Reference
concurrent_transfers
What Concurrent Transfers Does
Sets the maximum number of simultaneous call transfers a single agent can initiate at one time. Higher values allow agents to warm transfer multiple calls concurrently but require careful monitoring to prevent dropped transfers.
Recommended Configuration
| Center Size | Recommended Value | Notes |
| --- | --- | --- |
| 10–25 Agents | 1 to 3 depending on close rate | Start conservative, monitor for 48 hours before adjusting |
| 25–100 Agents | 1 to 3 depending on close rate | Scale gradually — larger operations amplify effects of misconfiguration |
| 100–500 Agents | 1 to 3 depending on close rate | Consult ViciStack optimization team for enterprise-scale tuning |
How to Change This Setting
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Go to Admin > Campaigns
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Select campaign
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Find Concurrent Transfers setting
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Set to integer value (usually 1 or 2)
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Monitor transfer completion rates after changing
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Submit
Common Problems
Values above 2 with inexperienced agents lead to call confusion
Setting to 0 prevents all transfers
Must align with VoIP trunk capacity
ViciStack Module
ViciStack’s Dialer Tuning & Auto-Configuration module automatically monitors and optimizes concurrent_transfers based on real-time performance data from your operation. Instead of manual tuning, ViciStack continuously analyzes call outcomes, agent performance, and contact rates to recommend and implement optimal values — often catching configuration drift before it affects your numbers.
Frequently Asked Questions
What does concurrent_transfers do in VICIdial? +
Sets the maximum number of simultaneous call transfers a single agent can initiate at one time. Higher values allow agents to warm transfer multiple calls concurrently but require careful monitoring to prevent dropped transfers.
What is the recommended value for concurrent_transfers? +
The recommended range for concurrent_transfers is 1 to 3 depending on close rate. The out-of-box default is 1. Note that optimal values vary by operation size, campaign type, and carrier — use ViciStack's automated tuning to find your exact optimal configuration.
Can ViciStack automatically optimize concurrent_transfers for me? +
Yes. ViciStack's Dialer Tuning & Auto-Configuration module monitors concurrent_transfers continuously and alerts you when the value drifts outside optimal range. On qualifying plans, ViciStack can automatically adjust this setting based on real-time performance data — no manual intervention required.
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