SMB
Small business
1–50 employees
One-call concierge. Cut your bill in 14 days.
No line of sight. No limit.
Independent infrastructure intelligence for SMB through global enterprise. We architect connectivity, voice, cloud, and security across 503 leading suppliers — so you stop overpaying and start scaling.
Free 30-min
No obligation
Veteran-led
503 nodes · live
Suppliers
503+
Categories
07
Avg. savings*
18–32%
Cost to you
$0
▪ Built for every scale
Whoever you are.
Whoever you are.
Wherever you're going.
Mid-market
Growth stage
50–500 employees
Multi-site networks. UCaaS, SD-WAN, SASE.
Enterprise
Large enterprise
500–10K employees
Strategic sourcing. Lifecycle governance.
Global
Global enterprise
10K+ employees
Multi-country procurement. Tier-1 carrier orchestration.
▪ The full stack ▪ One advisor
Solutions across the entire stack — and the entire transaction.
From the first dollar your customer swipes to the last bit that crosses your network. We don't sell one thing — we architect what you actually need.
▪ Interstellar I.S. · Communications & Technology
Voice & Collaboration
UCaaS, hosted voice, contact center, video, team chat — without overpaying per seat.
Contact Center (CCaaS)
Omnichannel, AI-driven CX, workforce engagement, call analytics — for any volume.
Network & Connectivity
Fiber, broadband, fixed wireless, MPLS, SD-WAN — every modality, every geography.
Cybersecurity
SASE, MDR, SSE, zero-trust, firewalls, identity — independent of any one stack.
Cloud & Data Center
Colocation, IaaS, hybrid cloud, hyperscaler routing, DRaaS — engineered for cost control.
Mobility & IoT
Wireless, 5G, fleet, IoT connectivity, MDM — for the edges of your business.
AI & Customer Experience
Conversational AI, agent assist, predictive analytics, intelligent routing — the next layer of every business stack.
▪ Nexus Pay · Merchant Services & Commerce
Statement Audit & Benchmarking
Line-by-line teardown of your existing processing statement. Hidden fees, padded markups, downgrades exposed in plain numbers.
Card Processing & Pricing
Interchange-plus, tiered, flat-rate — across Maverick, Beacon, Kurv/EMS, North, CardConnect, Pineapple. We benchmark, you pick.
Surcharge & Dual Pricing
Compliant surcharging and cash-discount programs that shift processing cost to the customer — without violating Colorado law or card-network rules.
Gateway & Terminal Hardware
POS, virtual terminals, mobile readers, online checkout, recurring billing — vendor-agnostic gateway integration.
Level II / Level III Optimization
Lower interchange on commercial-card transactions through complete data passing — recovered margin most processors quietly skip.
Residual Transparency & Reconciliation
Real-time portal showing your effective rate, processor splits, and margin recovery — month over month, no black box.
▪ Interstellar I.S. · How we work
From overpaying
From overpaying
to optimized — in five steps.
- 01 Discovery 30-min call. Pain points, current spend, contracts.
- 02 Sourcing We canvas 503 suppliers. You see only the top fits.
- 03 Quoting Side-by-side comparison. Cost, terms, fit, risk.
- 04 Implementation We project-manage rollout. You stay focused on operations.
- 05 Lifecycle Renewals, escalations, expansion — for the life of the contract.
▪ Nexus Pay · How the audit works
From hidden fees
From hidden fees
to recovered margin — in five steps.
- 01 Statement intake Send us your last three processing statements. Encrypted upload, NDA on request.
- 02 Forensic audit Line-by-line teardown. Hidden fees, padded markups, downgrades, non-qualified surcharges.
- 03 Side-by-side benchmark Your effective rate against the processor landscape. Five to eight rails compared on equal footing.
- 04 Recommendation Stay with your current processor at corrected pricing — or move. Your call. We show our math.
- 05 Stay only when you save No retainer. No hourly. We earn residuals only when you keep processing through the new structure.
▪ Veteran-owned ▪ Founder-led
A founder who actually returns the call.
Interstellar I.S. was founded by Marc Shamp — a U.S. military veteran with a background in communications infrastructure and disciplined operational execution.
After military service, our founder worked within enterprise-scale payment and technology environments representing more than $2.8 billion in transaction portfolios. That experience exposed a hard truth: small and mid-sized businesses are often charged more — and told less.
Interstellar I.S. was built to correct that imbalance in telecom, connectivity, and IT — the same way Nexus Pay corrects it in payments. Enterprise-level clarity. Disciplined sourcing. Transparent commercials. No outsourced sales floor. No 1-800-go-away.
If something is wrong — we fix it.
Marc Shamp
Founder · Veteran-owned
Available · Direct line
▪ Our standard of service
What we commit to —
What we commit to —
in writing.
Most master agents disappear after the install. We don't. These are the standards we hold ourselves to for every client, every contract, every renewal cycle.
01
24-hour response
Billing dispute or service escalation? We respond within one business day. No tickets disappearing into a queue.
02
90-day renewal notice
You hear from us 90 days before any contract auto-renews — with options, market comparables, and a recommendation. No surprise lock-ins.
03
$0 cost to you
We're paid by suppliers, not by you. No retainer. No hourly. No "advisory fee" line item. Ever.
04
Founder accountability
If something is wrong — we fix it. Escalations reach the founder directly. No outsourced support tier between you and the people who own the outcome.
▪ What we deliver
The full stack.
The full stack.
From swipe to signal.
Two specialist operators. One standard. Communications, connectivity, and IT infrastructure on one side. Payments, processing, and commerce on the other. Both vendor-agnostic. Both founder-led. Both built to lower your costs without lowering your standards.
Communications & technology infrastructure
Voice, network, cybersecurity, cloud, mobility, AI/CX — sourced across 503 leading suppliers, vendor-agnostic.
18–32%
Avg. annual savings*
503+
Suppliers · 7 categories
72hr
Typical time-to-quote
Merchant services & payment processing
Audit-first pricing across 5–8 processing rails. We benchmark your statement, expose hidden fees, and stay only when you save.
$800–2,400
Recovered monthly*
$2.8B+
Portfolio exposure
5–8
Processing rails
* Ranges based on industry-typical engagements with Calcerta Group operating companies. Individual results vary.
▪ Also part of Calcerta Group™
Same discipline.
Same discipline.
Different bill.
Overpaying your processor? Nexus Pay does for merchant fees what Interstellar does for telecom — independent, founder-led, audit-first. We benchmark your statement against the entire processor landscape, find what you're being charged that you shouldn't, and stay only when you save.
- ▸ Free forensic statement audit
- ▸ Sponsor-bank relationships across the major networks
- ▸ Veteran-owned · founder-accountable
▪ Begin
Stop overpaying. Start scaling.
A 30-minute call. No obligation. We'll tell you exactly where you're leaving money on the table — telecom, payments, or both.
- ▸ Free forensic review · No retainer
- ▸ Direct to founder · Veteran-led
- ▸ Response within one business day