OpenPhone vs KrispCall for B2B Marketplace Call Routing

A supplier calling about onboarding paperwork and a buyer calling to dispute a delivery need almost entirely different expertise to resolve well. When both land on the same general number, whoever happens to answer may not be the right person for either conversation, and there's no record afterward showing which team actually needs to follow up. A supplier's onboarding question can sit unresolved because the person who took the call assumed someone else was handling it.

On OpenPhone, a marketplace can run a distinct number and shared inbox for supply-side operations and another for demand-side support, each with its own team of specialists who can see the full history for their side. A buyer calling about a dispute reaches someone who handles disputes daily, not whoever happened to pick up a general line, and the record of that call stays visible to the whole demand-side team going forward.

An early-stage marketplace still figuring out its supply and demand mix, or running lean before it can justify dedicated teams for each side, may not need the structural separation yet. KrispCall's lower cost per number lets a small team stand up several numbers cheaply, general support, a specific supply-side hotline, without paying for shared-inbox sophistication the team is too small to use fully.

• Publish separate numbers for supply-side and demand-side contacts, even if the same small team answers both for now.
• Route each number to the team members who actually own that relationship, not a single shared queue for everything.
• Tag or log every call by which side of the marketplace it came from, so patterns in supplier versus buyer issues are visible later.
• Revisit the split every quarter as the team grows, since the point where dedicated teams make sense arrives faster than most marketplaces expect.

Say a buyer calls the general marketplace line to dispute a late delivery, and the call happens to get answered by whoever is handling supplier onboarding that day. Without marketplace context on disputes, that person either mishandles the resolution or has to transfer the buyer elsewhere, adding friction to a conversation that was already frustrating. A dedicated demand-side line staffed by people who resolve disputes daily gets that buyer a real answer on the first call, which matters directly for whether they keep using the marketplace at all.

A buyer who has a bad experience usually just stops placing orders, which shows up quickly in transaction data. A supplier who feels under-supported tends to quietly list fewer items or respond more slowly to leads before eventually leaving the platform outright, a slower and less visible decline that's easy to miss if nobody is specifically watching supply-side call quality. Building a dedicated supply-side line isn't just about routing efficiency, it's about having a place to actually notice that decline while there's still time to fix it.

Review supply-side call volume and resolution time on the same cadence you review buyer-facing metrics, not as an afterthought only checked when a supplier complaint escalates.

As transaction volume grows, revisit whether a single supply-side number and a single demand-side number are still enough, or whether categories within each side, high-value sellers versus long-tail sellers, for example, need their own routing. The same principle that justified splitting supply from demand in the first place, matching the caller to someone who actually handles their kind of issue, keeps applying as the marketplace's caller base gets more varied, and waiting until routing visibly breaks down is a more expensive way to discover the need than reviewing it proactively. Build the review into a quarterly operations check rather than waiting for a support team to raise the alarm on its own, since by the time frontline staff are complaining about call volume, the routing gap has usually already cost you a few sellers or buyers who quietly gave up and left.