Four Ways to Use Trestle’s Activity Score for Outbound Dialing
If you’ve ever managed a call campaign, whether for sales, support, surveys, or lead outreach, you know the frustration of dialing numbers that go nowhere. Disconnected phones can be a headache because dialing them is a waste of time, money, and energy. And when you’re conducting high-volume outbound dialing, even a small percentage of dead numbers can have a big impact on performance.
The Problem with Disconnected Phone Numbers
Disconnected phone numbers are numbers that no longer belong to a carrier or subscriber. They’re out of service, and calls to them result in either a recorded message (“This number is no longer in service”) or endless ringing that goes unanswered. But the impact goes far beyond a missed call:
- Wasted agent time: Every second spent calling an unreachable number is a second not spent talking to a real person .
- Lower contact rates: Dead numbers drag down your overall connection rate, skewing performance metrics and potentially triggering spam flags.
- Increased operational costs: More dials = more minutes = more money — especially if you’re using a predictive or power dialer setup.
- Compliance risks: Repeatedly calling numbers that are no longer active may lead to TCPA violations, especially if they’ve since been reassigned.
For teams dialing at scale, identifying disconnected numbers before calling them is important for many reasons.
What Does “Disconnected” Really Mean?
At a technical level, a disconnected number is one that is no longer active with any carrier. This means:
- The account could be suspended.
- The number may have been ported out and never reactivated.
- The line may have been reassigned or is in a “cooling-off” period before reuse.
Disconnected doesn’t mean “no one answered.” It means there’s no one there to answer, period, so you’re calling into the void.
But here’s the tricky part: it’s not always obvious from the outside whether a number is disconnected, especially when working with stale lead data, purchased lists, or contact records that haven’t been updated recently. That’s where phone validation can help.
Validate Before You Contact with Phone Validation API
Trestle’s Phone Validation API helps you filter out disconnected and unreachable numbers before they ever hit your dialer. Not only does it include carrier information and line type, but it also includes a Phone Activity Score to give you a sense of whether the phone is likely connected and the person on the other end is likely to pick up.
What the API Checks:
- Line Type: Is the phone mobile, landline, non-fixed or fixed VoIP, etc.?
- Carrier Assignment: Is it currently assigned to a carrier, or has it been deactivated?
- Activity Score: A proprietary signal that measures how recently and frequently a number has shown signs of usage.
What Is the Activity Score?
The Activity Score is a game changer for teams looking to optimize their contact rates. It looks at phone behavior over the last 12 months to assess whether a number has shown consistent or inconsistent use. Instead of just asking, “Is this a real number,” it helps you ask, “Is this number worth calling based on their activity?”
By assigning a score from 0 to 100, the Activity Score provides insights into phone number engagement, which enables businesses to optimize workflows, prevent fraud, and improve customer outreach. Here’s how to interpret the scores:
- 70-100: The phone is active, consistently used, and likely connected to a subscriber.
- 30 or below: There’s either no recent activity or high confidence that the phone is disconnected.
- Around 50: Limited data makes it uncertain whether the phone is active or inactive.
How to Leverage Phone Activity Score for Better Decision-Making
1. Lead Prioritization and Scoring
Sales and marketing teams can use Activity Score to focus on high-quality leads by identifying which phone numbers are reachable. A higher Activity Score of 70 or higher indicates an engaged and active contact, allowing teams to prioritize prospects who are more likely to answer calls or respond to messages, leading to higher conversion rates.
2. Fraud Detection and Prevention
Fraudsters often use disconnected or disposable numbers to create fake accounts. By incorporating Trestle’s Activity Score, businesses can automatically flag phone numbers with low scores and prevent fraudulent sign-ups or transactions. This reduces risk and helps protect business operations from bad actors.
3. Optimizing Outbound Communications
Call centers and SMS marketing teams can significantly improve contact rates by filtering out disconnected numbers. By targeting only numbers with high Activity Scores, businesses can reduce wasted calls, cut costs, and make sure outreach efforts are directed toward reachable customers.
4. Data Enrichment and Hygiene
Outdated or inactive contact data can lead to wasted marketing spend and poor customer experiences. Using Trestle’s Activity Score, businesses can regularly audit their databases to remove or update disconnected numbers, keeping contact lists fresh and ensuring higher engagement rates across all channels.
The Result: Higher Connection Rates, Lower Costs
By integrating Trestle’s Phone Validation API into your workflow, you can:
- Filter out disconnected numbers automatically
- Improve contact rates across your campaigns
- Reduce wasted dials and agent effort
- Increase ROI on lead purchases and data hygiene efforts
Trestle’s Phone Validation API with Activity Score helps businesses make smarter, data-driven decisions by distinguishing between active and inactive phone numbers. Whether you’re prioritizing leads, preventing fraud, improving outreach, or maintaining clean data, integrating Trestle’s Activity Score into your workflow can drive efficiency and maximize business success.
Ready to try it out? Test it out for free.
