Buy DID numbers for Grandstream UCM, SIP trunk setup with DIDHub
DIDHub provides DIDs and SIP trunks for Grandstream UCM IP-PBX series (UCM6300, UCM6200, UCM6510, etc.). Drop-in SIP trunk configuration in the UCM admin UI, supports inbound DID routing, outbound CID, recording, and Grandstream's standard call-flow features.
Why DIDHub for Grandstream UCM
- Native SIP trunk fit. Grandstream UCM's SIP trunk admin UI is straightforward; DIDHub plugs in as one of the trunk types with standard registration or peer-IP authentication.
- Per-DID flat pricing for SMBs. Grandstream UCMs are popular with SMBs and MSPs. DIDHub's no-minimum, no-commit pricing matches the SMB economics.
- 136-country DID coverage. For multi-site or multi-country Grandstream deployments, one DIDHub trunk handles all countries.
- Inbound CID name lookup. Grandstream UCM can do CNAM lookup on inbound calls; DIDHub passes the right SIP From-display-name when available.
- Recording-friendly. Grandstream UCM's call-recording feature works regardless of upstream trunk; DIDHub doesn't interfere with recording mid-call SIP signaling.
SIP trunk setup, step by step
- Sign up at /signup and provision DIDs.
- Generate DIDHub SIP credentials.
- In Grandstream UCM admin: Extension/Trunk → VoIP Trunks → Add SIP Trunk. Choose Register-style or Peer-style.
- Paste DIDHub SIP URI (typically
sip.didhub.io) and credentials. - Configure inbound routes to map each DID to the appropriate extension / IVR / queue.
- Configure outbound routes to use the new trunk with the right Caller-ID per extension.
- Test inbound + outbound; verify ring-group, hunt, and recording behavior.
Pricing snapshot
Flat per-DID pricing fits the SMB / MSP profile that Grandstream UCMs typically serve. No surprise minimums.
| Country | Number type | From |
|---|---|---|
| United States | Geographic local | $1.99/mo |
| United States | Toll-free 800/833/844/855 | $1.50/mo + usage |
| United Kingdom | London 020 / 0330 national | $0.63/mo |
| Germany | Berlin 030 / nationwide | $1.10/mo |
| Israel | National 073 / city codes | $2.50/mo |
| Japan | Tokyo 03 / nationwide | $2.00/mo |
| Australia | Sydney 02 / nationwide | $1.30/mo |
Full per-country pricing on each country page. Per-minute outbound from $0.003/min for US-domestic landline; Origin Based Rating (OBR) applies to EEA outbound.
FAQ
Which Grandstream UCM models work with DIDHub?
All current models, UCM6300 series (6301, 6302, 6304, 6308), UCM6200 series, UCM6510, plus older UCM61xx still supported via standard SIP.
Can I use Grandstream's GDMS cloud manager with DIDHub?
Yes. GDMS provisions Grandstream phones; the SIP trunking layer is independent and uses DIDHub regardless of GDMS provisioning.
Does Grandstream's UCMRC (Remote Connect) work with a DIDHub trunk?
Yes, UCMRC handles remote-extension NAT traversal, which is unrelated to the upstream SIP carrier.
How do I migrate from another carrier to DIDHub on Grandstream UCM?
Add DIDHub as a second SIP trunk alongside your existing one. Move inbound routes per DID as they port in. Standard parallel-cutover.
Buy your first Grandstream UCM DID
Sign up at /signup, pick a country, route the DID to your Grandstream UCM SIP trunk. Sub-60-second activation on most countries. No commits.
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