Calls arriveScams stop at the edge
01
Fewer scam calls
Robocalls and spoofed numbers get stopped at the edge of your network, before they reach a subscriber.
VOICE SHIELD
Voice firewall for carriers: stop scam calls before the first ring.
Voice Shield is the call firewall for carriers and operators. MCM AI checks every SIP and SS7 call and blocks spoofed caller IDs and robocalls before phones ring.
- SIP and SS7 call inspection
- Block calls or add a scam label
Incoming call check Live
+1 415 ••• 0142
Incoming call · checking signaling
International Voice Shield
- 1Caller ID...
- 2Route...
- 3MCM AI verdict...
- 4Action...
01Why carriers use it
Why carriers deploy a voice firewall
Fewer scam calls, calls people trust again, and labels that explain who is calling.
Calls get ignored
Without trust
02
Calls people answer
Your subscribers pick up again because they trust who is calling.
+1 646 ••• 0188
Incoming call
Scam likely
03
Clear call labels
MCM AI tags suspicious calls so subscribers know what to expect.
02Caller ID spoofing
Caller ID spoofing protection at the network edge
MCM AI checks every caller ID against the route it came from. When a local number shows up on a foreign route, or a brand number looks faked, the call gets blocked or flagged.
The caller ID says
+1 415 ••• 0142
Local number≠mismatch
The route says
International route
A local caller ID cannot arrive on a foreign route
What the subscriber sees
Call blocked
The phone never rings
action: block
- Route versus caller ID
- Fake brand numbers
- Block or flag
03Robocalls and spam
Robocall blocking that spots patterns in real time
Short calls, huge volumes and number hopping all leave a trail. MCM AI spots these patterns in real time and shuts down the source before the campaign spreads.
Pattern filters
every call passes three checks
Calls arriving
Subscribers0 clean
Volume spike
Caught0
Short calls
Caught0
Number hopping
Caught0
MCM AI is tracing the source behind the calls...
- Volume spike alerts
- Number hopping spotted
- Source shut down fast
04SIP and SS7
Deep SIP and SS7 call inspection
Voice Shield reads signaling across SIP and SS7 links so nothing slips past. Suspicious messages in the signaling layer get blocked, and every event lands in your case history.
Reading signaling
- ✓INVITE sip:+14155550100@edge · normal call
- ✕INVITE From: +1 415 ••• 0142 · trunk: foreignBLOCKED · caller ID does not match the route
- ✕INVITE · one source, very high call volumeBLOCKED · volume spike from one source
- ✓INVITE sip:+16505550123@edge · normal call
Case history
- No events yet
Every event lands in your case history.
- SIP signaling checks
- SS7 signaling checks
- Full event history
05Step by step
How Voice Shield stops a spoofed call
Follow one call from a spoofed local number to a blocked call and a new entry on the threat list.
- hop 1 · Caller
Places a call with a spoofed local number over an international route.
- hop 2 · Network
Passes the SIP signaling to Voice Shield before routing the call.
- hop 3 · MCM AI
Matches the caller ID to the route and spots the mismatch instantly.
- hop 4 · MCM AI
Blocks the call and adds the source to the live threat list.
Live threat list
- src-12Robocall patternBlocked
- src-31Number hoppingBlocked
- src-08Fake brand numberBlocked
- src-77Spoofed local numberPending
src-77 · case details
- Caller ID said
- Local number
- Route said
- International
- MCM AI verdict
- Spoofed
- Action
- Blocked
Waiting for the verdict...
06Who it is for
Who uses a voice firewall
Built for the networks that carry the calls, and for the partners who resell them.
Carriers
Protect your own subscribers from scam and spoofed calls at the edge of your network.
Mobile operators
Launch a call firewall for subscribers, with labels that explain what is calling.
Wholesale partners
Resell Voice Shield to partners and enterprise customers under your logo.
Testimonials
What clients say after 90 days.
Real teams, real numbers — from sales floors, CX desks, and support queues.
+24%
First Contact Resolution
11 hrs
Per week returned to sales
−38%
Average Handle Time
FAQ
The questions teams ask on the first call.
What is a voice firewall for carriers?expand_more
Voice Shield is the call firewall carriers and operators launch across their network. MCM AI inspects every SIP and SS7 call, spots spoofed caller IDs and robocalls, and blocks them before phones ring.
Which signaling does Voice Shield inspect?expand_more
It inspects SIP and SS7 signaling, so calls are checked no matter how they enter your network.
How does Voice Shield detect caller ID spoofing?expand_more
MCM AI checks every caller ID against the route it came from. When a local number shows up on a foreign route, or a brand number looks faked, the call is blocked or flagged.
Can subscribers see a scam warning label?expand_more
Yes. You can block calls outright, or let them through with a scam warning label.
Does a voice firewall slow down call setup?expand_more
No. MCM AI makes its call decision in real time, so good calls connect as usual.
Can I resell Voice Shield to wholesale partners?expand_more
Yes. Resell Voice Shield to partners and enterprise customers under your logo.
Ready to launch Voice Shield?
Talk to our partner team and put MCM AI on guard across your voice network.
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