What are the lead times for orders?

Both peak and off-peak season lead times are within 15 workdays.

What is the minimum order quantity?

The minimum order quantity is 1 PC.

Does the device support SMS and USSD?

Yes, it supports SMS sending/receiving, batch SMS, and USSD balance inquiry.

2g SIM Box VoIP Gateway 16 Port 128 Sims GoIP GSM Gateway for Calling Rotation

Name: 2g SIM Box VoIP Gateway 16 Port 128 Sims GoIP GSM Gateway for Calling Rotation
Brand: Shenzhen Etross Telecom Co., Ltd.
SKU: 2141295972

Guangdong, ChinaShenzhen Etross Telecom Co., Ltd.

US$1,250.00

1-4 Pieces

US$1,200.00

5-9 Pieces

US$1,150.00

10+ Pieces

Sample price:US$999.00/piece.Request sample

Product profile

Customization

Available

Model Name

VoIP Gateway

Network

4G / GSM Support

Model NO.

GSM VOIP Gateway 16 ports 128 sims

Port Number

SIM Card Slots

128

IMEI Change

Support

API

Support

Firmware Update

HTTP/TFTP

Ussd

Support

Human Behaviour

Support

Calling Type

Terminate/Originate Calls

Switch Bandwidth Optimization(Sbo)

Support

Dtmf & Tts & Ivr

Support

Warranty

1 Year

Transport Package

Carton Box

Specification

GSM VOIP Gateway 16 ports 128 sims

Trademark

Etross / OEM Brand

Origin

Shenzhen, China

HS Code

8517629300

Production Capacity

50000000 PCS /Year

Key features

Multi-Port SIM Capacity: Supports 8, 16, or 32 ports with up to 512 SIM card slots for high concurrency.

Advanced SIM Rotation: Prevents SIM blocking via rotation based on duration, call count, or failure rates.

Human Behavior Simulation: Mimics natural user activity to avoid detection and ensure network stability.

Switch Bandwidth Optimization: SBO technology optimizes bandwidth usage for efficient call routing.

IMEI Modification Support: Allows auto-generation and modification of IMEI for enhanced flexibility.

Comprehensive Protocol Support: Fully supports SIP V2.0, GSM, CDMA, 3G, and 4G networks.

Built-in WiFi and 4G Options: Optional built-in WiFi router and 4G module for mobile connectivity.

Customized IVR Features: Supports two-stage dialing and customizable voice prompts for call handling.

Company profile

Experienced TeamYears of Export ExperienceHigh Repeat Buyers ChoiceImporters and Exporters

Shenzhen Etross Telecom Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 17 Years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤6.80h

AI-Powered supplier vetting

SummaryShenzhen Etross Telecom Co., Ltd. is a Shenzhen-based limited company with 18 employees, focused on communication equipment and electronic products, including fixed wireless phones and terminals. It reports production capacity of up to 1,000 sets per day, 17 years of export experience, sample-based customization, and R&D activity including new products in the past year and ODM services. Some products are stated to have passed CE, FCC, and RoHS certification, but specific products and certificate records are not provided. Service-control documentation is weak: there are no written procedures or records for corrective actions or complaint handling, and overseas service infrastructure is absent. Financial-related records are identified for 2021–2023, but no substantive financial results are provided. No customer cases are presented.

Supplier typeThe supplier is Shenzhen Etross Telecom Co., Ltd., a combined, privately structured limited company located in Shenzhen, China, with 18 employees. Its licensed scope covers manufacturing communication equipment and electronic products, and it is not identified as part of a larger group.

CertificationsThe company states that some products have passed CE, FCC, and RoHS certification. However, the slices do not identify the certified products or provide certificate details, so the evidence supports stated certification coverage but not comprehensive verification.

After-Sales capabilityThe supplier has no written procedures or records for customer complaint handling or corrective and preventive actions. It also reports no overseas warehouse, showroom, agent, branch, or offline trade-show participation; therefore, documented and international after-sales support appears limited.

R&D capabilityThe supplier reports an R&D center with experienced engineers, new products developed during the past year, and ODM services. It does not provide an SDK and does not serve popular brands through OEM, so innovation capability is demonstrated but limited in the stated areas.

Production capacityThe supplier states production capacity of up to 1,000 sets per day, has listed production and testing equipment, and reports peak- and off-season lead times within 15 working days. Its 18-employee workforce and the absence of further capacity records limit the breadth of verification, but the stated operating capability is positive.

Customization capabilityThe supplier supports customization from samples and provides ODM services, directly indicating both sample-based customization and original design manufacturing capability. No broader customization scope or SDK support is stated.