VICIdial Concurrent Transfers: Complete Optimization Guide

Quick Reference

Setting Name

concurrent_transfers

Default Value

1

Recommended

1 to 3 depending on close rate

Impact Level

Medium

Location in VICIdial

Admin > Campaigns > [Campaign] > Transfer Settings

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.

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

  1. 1 Go to Admin > Campaigns
  2. 2 Select campaign
  3. 3 Find Concurrent Transfers setting
  4. 4 Set to integer value (usually 1 or 2)
  5. 5 Monitor transfer completion rates after changing
  6. 6 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

closer_campaigns Closer Campaigns Campaign default_xfer_group Default Transfer Group Campaign xfer_group_order Transfer Group Order Campaign

ViciStack Module

How ViciStack Optimizes Concurrent Transfers

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.

Learn About Dialer Tuning & Auto-Configuration →

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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