WIRELY INTERNET CHECK
Is your internet ready
for business calls?
Three plain answers in about 30–45 seconds: can it handle calls, can call traffic get through your firewall, and is there enough speed for your team.
Before you start
Run this at your business, on the same network your phones use. A computer plugged in with a network cable gives the best answer. Pause big downloads and backups, and turn off any VPN if you’re allowed to.
Takes about 30–45 seconds. Uses roughly 20–500 MB of data depending on your speed (avoid metered hotspots). Your browser connects to Wirely’s and Cloudflare’s test servers and briefly contacts Verizon’s public setup servers. We see your internet address and network name to explain the results. No microphone, camera or files are used, and nothing is saved unless you choose to send your results. Privacy
Ready when you are.
- Your connection details
- Call-style test (10 seconds)
- Speed and busy-time test
- Verizon setup servers
Your next steps
What we measured
Connection details
Good to know: Verizon One Talk does not need a static IP address or any port forwarding. Phones connect out to Verizon on their own. A static IP only matters for other things, like remote access to cameras or servers.
About this test
- Delay is the round trip measured by Cloudflare’s network on your connection to our test server.
- Steadiness and lost data come from a 10-second call-style test: 50 small packets a second, like a phone call, sent as UDP through Cloudflare’s relay and back to your browser.
- Busy-time grade compares delay to our server when idle and while the speed test is downloading and uploading. A ≤10 ms, B ≤30, C ≤60, D ≤200, F above that.
- Speed uses Cloudflare’s speed-test servers. Very fast connections (around 1 Gbps or more) may read lower than your plan.
- Targets follow Verizon’s published One Talk limits: delay under 150 ms each way, steadiness (jitter) under 40 ms, lost data under 1%; upload of 1 Mbps per computer plus 0.1 Mbps per phone.
- This is a snapshot from this device. It can’t test the phones themselves, SIP ALG, phone signaling (TCP 5061), voicemail (TCP 143), time (UDP 123), traffic markings, or every audio port. Browsers aren’t allowed to open those. Verizon’s advanced test covers them.
- Connection details marked “hint” are educated guesses, not certainties.
Verizon One Talk network requirements
Everything Verizon lists for One Talk desk phones (plugged in or on Wi-Fi) and the One Talk apps, with a link to Verizon’s page for each item. This page checks what a browser can; to confirm the rest, run Verizon’s advanced One Talk test ↗ on a Windows PC or Mac on the same network as the phones (it installs a small helper app). Don’t turn off your firewall or open inbound ports.
Printable version Download as text
Show the full list
Desk phones: plugged in by Ethernet or on Wi-Fi
| What it’s for | Destination | Protocol | Port(s) |
|---|---|---|---|
| Device configuration (setup) One Talk First Steps, Step 5, KB 206583: One Talk Desk Phone Ports and Protocols, One Talk FAQs | deviceact.myvzw.com | HTTPS (TCP) | 443 |
| Call signaling One Talk First Steps, Step 5, One Talk FAQs | devicegw.myvzw.com, devicegw.gtm.myvzw.com | SIP over TLS (TCP) | 5061 |
| ⚠ KB 206583 instead lists deviceact.myvzw.com for signaling on HTTPS 443 and SIP-TLS 5061. Allow 5061 to all three hostnames. | |||
| Voice / video media One Talk First Steps, Step 5, One Talk FAQs | Any (Verizon media servers) | SRTP (UDP) | 1024–47383 |
| ⚠ KB 206583 lists media ports as "ANY". Verizon names the protocol SRTP; it runs over UDP. Allow outbound UDP 1024–47383 at minimum. | |||
| Network time (NTP) One Talk First Steps, Step 5, One Talk FAQs, KB 206583: One Talk Desk Phone Ports and Protocols | 0.pool.ntp.org, time.nist.gov (or your DHCP option 42 server) | NTP (UDP) | 123 |
| ⚠ KB 206583 lists cn.pool.ntp.org. If NTP isn’t given by DHCP option 42, phones fall back to the US NIST pool. Time zone comes from the phone’s 911 address. | |||
One Talk mobile & desktop apps on Wi-Fi or Ethernet
| What it’s for | Destination | Protocol | Port(s) |
|---|---|---|---|
| Sign-in / device configuration One Talk First Steps, Step 5, KB 206583: One Talk Desk Phone Ports and Protocols, One Talk Desktop App guide (updated July 2025) | spc-mepfe.myvzw.com | HTTPS (TCP) | 444 |
| Sign-in (desktop app) One Talk Desktop App guide (updated July 2025) | xsi-vasp.myvzw.com | HTTPS (TCP) | 8220 |
| ⚠ Listed only in the July 2025 Desktop App guide. | |||
| 911 address provisioning One Talk First Steps, Step 5, KB 206583: One Talk Desk Phone Ports and Protocols, One Talk Desktop App guide (updated July 2025) | spg.vzw.com | HTTPS (TCP) | 443 |
| Call signaling One Talk First Steps, Step 5, One Talk FAQs | volte-ice.myvzw.com | SIP over TLS (TCP) | 443 and 5061 |
| ⚠ The Desktop App guide prints "433 & 5061" (almost certainly a typo for 443). KB 206583 lists volte-ice.vzw.com with "443 061" (likely 5061). Allow 443 and 5061 to both hostnames. | |||
| Voice / video media One Talk First Steps, Step 5, One Talk Desktop App guide (updated July 2025), One Talk FAQs | Any | SRTP (UDP) | 1024–47383 |
| ⚠ KB 206583 lists "ANY". | |||
| Messaging One Talk First Steps, Step 5, One Talk Desktop App guide (updated July 2025) | v4bservices.vma.vzw.com, syncva.vzmessages.com | HTTPS (TCP) | 443 |
| Messaging One Talk First Steps, Step 5, One Talk Desktop App guide (updated July 2025), One Talk FAQs | mqtt.vzmessages.com | MQTT over TCP | 443 |
| ⚠ KB 206583 also lists messaging on IMAP port 993 (no hostname). Allow outbound TCP 993 too. | |||
| Visual voicemail One Talk First Steps, Step 5, KB 206583: One Talk Desk Phone Ports and Protocols, One Talk FAQs, One Talk Desktop App guide (updated July 2025) | v4becs-vvm.lv.imsvm.com, vmas-v4b-reg.vzims.com | IMAP over TCP | 143 and 443 |
| ⚠ First Steps, KB 206583 and the FAQ say TCP 143; the July 2025 Desktop App guide says TCP 443 and adds vmas-v4b-reg.vzims.com. Allow both ports. | |||
| Directory download & log collection One Talk Desktop App guide (updated July 2025) | deviceact.gtm.myvzw.com | HTTPS (TCP) | 443 |
| ⚠ Listed only in the Desktop App guide. | |||
Router and firewall settings
- Traffic markings (QoS): Default DSCP: voice/video (RTP) 46 (EF); signaling (SIP) 26 (AF31). Have your switches and Wi-Fi honor these markings. (One Talk First Steps, Step 5, One Talk FAQs)
- SIP ALG: Disable SIP ALG and SIP transformations on the router/firewall. (One Talk First Steps, Step 5, One Talk Desktop App guide (updated July 2025))
- NAT: Enable consistent NAT. (One Talk First Steps, Step 5, One Talk Desktop App guide (updated July 2025))
- UDP session timeout: Increase the UDP timeout to 120 seconds or longer. (One Talk First Steps, Step 5, One Talk Desktop App guide (updated July 2025))
- Firewalls and filters: Make sure the required ports aren’t blocked. Traffic must be allowed through any filtering device on your network (firewalls, IDS, SBC). (One Talk First Steps, Step 5, KB 206583: One Talk Desk Phone Ports and Protocols)
- Hostnames: Verizon says these hostnames (FQDNs) can change. Allow by hostname where your firewall supports it, and re-check Verizon’s pages before making changes. (One Talk First Steps, Step 5, One Talk Desktop App guide (updated July 2025))
Performance and bandwidth
- Delay (latency): No more than 150 ms in any one direction. (KB 206583: One Talk Desk Phone Ports and Protocols)
- Jitter: No more than 40 ms. Verizon’s site test treats under 5 ms as optimal. (KB 206583: One Talk Desk Phone Ports and Protocols, One Talk Site Qualification & Validation Tool guide (PDF))
- Packet loss: Under 1% on the internet (WAN) and under 0.05% on the local network (LAN). Verizon’s site test treats 0.1% or less as optimal. (KB 206583: One Talk Desk Phone Ports and Protocols, One Talk Site Qualification & Validation Tool guide (PDF))
- Upload bandwidth: Ideal: 1 Mbps per computer + 100 kbps per desk phone (example: 10 PCs + 10 phones = 11 Mbps upload). Under 50% of that risks connection or voice problems. (KB 209694: One Talk Minimum Speed / Bandwidth Requirements)
- Data per call: About 0.5 MB per minute for a voice call; about 3.5 MB/min one-way video and 6.6 MB/min two-way video. (One Talk FAQs)
- Internet type: Always-on broadband. DSL and satellite aren’t recommended for desk phones; 4G LTE broadband routers are an alternative. Verizon doesn’t support third-party routers. (KB 209694: One Talk Minimum Speed / Bandwidth Requirements)
- IP addresses (DHCP): Make sure your router’s DHCP pool has enough addresses for every phone, computer, tablet, printer and other device. Some routers hand out only about 10. (KB 209694: One Talk Minimum Speed / Bandwidth Requirements)
Wi-Fi and wired
- Desk phones: One Talk desk phones connect to your network by Ethernet cable or Wi-Fi. The same desk-phone ports above apply either way. (KB 209694: One Talk Minimum Speed / Bandwidth Requirements, One Talk First Steps, Step 5)
- Apps on Wi-Fi or Ethernet: The One Talk mobile and desktop apps, when registered over Wi-Fi or Ethernet, use the "apps" list above. (One Talk First Steps, Step 5, One Talk FAQs)
- Sharing one network jack: A desk phone can share one Ethernet jack with a computer: router → phone’s internet port, then phone’s PC port → computer. (One Talk FAQs)
Also good to know
- No static IP and no inbound port forwarding are needed. Every connection Verizon lists goes out from the phone or app to Verizon. (Wirely note: Verizon doesn’t say this in one sentence, but nothing on its lists needs either. Don’t open inbound ports or turn off the firewall.)
- DNS: Verizon doesn’t list DNS, but phones and apps must be able to resolve the hostnames above with your normal DNS (UDP/TCP 53, usually handed out by DHCP). (Wirely note.)
- Wi-Fi tuning: Verizon’s pages don’t give Wi-Fi settings beyond the port lists. General good practice (not a Verizon requirement): 5 GHz with a strong signal where phones are used, and Wi-Fi QoS/WMM that honors DSCP 46. (Wirely note.)
- Verizon’s advanced site test (the Site Qualification & Validation tool) needs these ports only while it runs: TCP 20000, 20001, 5060, 554; UDP 20000, 20001, 8090, 554, 555, 556; HTTP 80, 8080. (Source: KB 206583.)
Sources (checked October 28, 2026): Verizon One Talk First Steps, Step 5 · Verizon KB 206583: One Talk Desk Phone Ports and Protocols · Verizon KB 209694: One Talk Minimum Speed / Bandwidth Requirements · Verizon One Talk Desktop App guide (updated July 2025) · Verizon One Talk FAQs · Verizon One Talk Site Qualification & Validation Tool guide (PDF). Rows marked ⚠ are places where Verizon’s own pages disagree; allow the combined list. Hostnames can change, so re-check Verizon’s pages before changing firewall rules.