Three chassis positions
X1911, X1960, and X1981 form a clear entry, midrange, and high-density UScale selection path.
UScale X1900 Series
A modular unified gateway platform family for enterprise voice access, carrier interconnection, and mixed IP, analog, and digital telephony rollout.
Choose the right UScale chassis for your access plan.
Entry-level UScale X1900 unified gateway for projects that need modular voice access in a compact chassis footprint.
- Maximum Users
- 300
- Maximum Concurrent Calls
- 100
- Maximum Local Analog Users
- 96
- Maximum FXO Interfaces
- 36
- Maximum E1/T1 Interfaces
- 12 / 12
- Maximum Conference Users
- 60
Match UScale models to chassis scope.
Use the three-card layer as a quick selection guide before opening the detailed comparison matrix.
UScale X1911
Focused Modular Entry
Use X1911 when the rollout needs UScale architecture in the smallest X1900 positioning tier.
- User capacityUp to 300 total users, including up to 300 SIP users and 96 local analog users.
- Trunk densityUp to 36 FXO ports or 12 E1/T1 interfaces through the supported board plan.
- Best fitSmall and midsize sites that need a 1U X1900 gateway with hybrid analog, digital, and SIP access.
UScale X1960
Expandable Midrange Platform
Use X1960 when the site needs more room for mixed boards and access growth.
- User capacityUp to 1,000 total users and 224 local analog users for larger branch or enterprise sites.
- Trunk densityUp to 84 FXO ports or 28 E1/T1 interfaces, with 1+1 power backup support.
- Best fitDeployments that need more analog and digital trunk headroom without moving to the X1981 tier.
UScale X1981
Dense Aggregation Chassis
Use X1981 when the project is driven by larger access aggregation and chassis capacity.
- User capacityUp to 20,000 users and 2,000 concurrent calls for aggregation-scale voice service.
- Trunk densityUp to 72 FXO ports or 24 E1/T1 interfaces, plus main-control redundancy positioning.
- Best fitHigh-capacity core or aggregation roles where SIP trunk and conference scale drive selection.
Platform capabilities for scalable voice access.
Keep the UScale story focused on modular gateway architecture, access-board planning, and maintainable chassis growth.
Hybrid Access Platform
Plan IP, analog, and digital voice access on one modular gateway family instead of separating every access type into isolated appliances.
Modular Board Architecture
Select the board mix around project access needs, then scale across X1911, X1960, and X1981 as chassis requirements grow.
Serviceable Chassis Design
Use hot-swappable board positioning to keep maintenance and expansion aligned with carrier and enterprise access workflows.
Gateway-Centric Operations
Keep routing, access planning, and deployment operations focused on a unified gateway layer for large voice environments.
Board mix first
The model conversation starts with access boards, slot planning, and final interface requirements.
Growth without page sprawl
The aggregate page helps buyers compare the family before opening the model detail pages.
Enterprise gateway fit
Position UScale as a scalable unified gateway platform rather than a small-office IPPBX appliance.
Plan chassis, boards, and access roles together.
UScale selection should connect the chassis tier, module plan, access role, and maintenance model before the project moves into quotation.
Chassis tier
Start with X1911, X1960, or X1981 according to the site footprint, density target, and expansion expectation.
Board mix
Map analog, digital, and IP access requirements into the required module selection before finalizing the gateway model.
Access topology
Use the platform as a gateway layer between trunks, enterprise voice systems, and legacy endpoint access.
Service workflow
Keep hot-swappable module planning, maintenance windows, and future expansion in the same architecture decision.
Compare UScale X1911, X1960, and X1981 specifications
Source-backed capacity, interface, trunk, conference, voicemail, and physical parameters from the UScale X Series whitepaper and original model pages.
| Specification | UScale X1911 | UScale X1960 | UScale X1981 |
|---|---|---|---|
| Capacity | |||
| Maximum Users | 300 | 1,000 | 20,000 |
| Maximum SIP Users | 300 | 1,000 | 20,000 |
| Maximum Local Analog Users | 96 | 224 | 192 |
| Maximum Concurrent Calls | 100 | 420 | 2,000 |
| Interfaces | |||
| Maximum FXO Interfaces | 36 | 84 | 72 |
| Maximum PXS Interfaces | 36 | 84 | 72 |
| Maximum E1/T1 Interfaces | 12 / 12 | 28 / 28 | 24 / 24 |
| GE Interfaces | 4 | 4 | 4 |
| Trunks And UC Services | |||
| SIP Trunk Groups | 255 | 255 | 1,024 |
| Maximum SIP Trunk Group Channels | 100 | 1,000 | 20,000 |
| Maximum Conference Users | 60 | 360 | 2,000 |
| Voicemail Concurrent Channels | 12 | 30 | 30 |
| Physical And Power | |||
| Rack Height | 1U | 2U | 2U |
| Dimensions | 440 x 316.6 x 44 mm | 440 x 316.6 x 86 mm | 440 x 316.6 x 86 mm |
| Weight | 6 kg fully equipped | 10 kg fully equipped | 10 kg fully equipped |
| Power | 100-240V AC | 100-240V AC, 1+1 backup | 100-240V AC, 1+1 backup |
Resources for UScale evaluation and rollout.
Move from family selection into product detail pages, datasheets, firmware, and support paths for final engineering review.
Resources
Document Center
Collect manuals, deployment references, and supporting documents for UScale gateway planning.
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Products
Model Detail Pages
Review X1911, X1960, and X1981 detail pages when the chassis tier and board mix need final confirmation.
Compare models
Resources
Firmwares
Use firmware resources for maintenance planning and version alignment after deployment.
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Support
Ticket Support
Submit project and interoperability cases when deployment scope needs technical follow-up.
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