What are the payment and shipping terms?

Payment terms include T/T, PayPal, and Western Union. Shipping terms are FOB, CIF, CFR, or EXW. Lead time is within 15 workdays.

Does the device support SIM card locking?

Yes, it supports SIM card locking and network operator locking to prevent unauthorized usage.

Four SIM Card GSM Fixed Wireless Terminal with 4 SIM

Name: Four SIM Card GSM Fixed Wireless Terminal with 4 SIM
Brand: Shenzhen Etross Telecom Co., Ltd.
SKU: 879743165

Guangdong, ChinaShenzhen Etross Telecom Co., Ltd.

US$150.00

1 Piece

Product profile

Customization

Available

Type

4 Sims GSM FWT

Usage

Voice Call

Model NO.

ets-4s-2g

Certification

CE, RoHS

Condition

New

Model Number

Ets-4s

FXS Rj 11 Port

PSTN FXO( Optional)

Reversal Polarity

Support

Dtmf or Fsk Caller ID

Support

Pin/SIM Card Lock

Support

Polarity Reversal

Support

Transport Package

20PCS/CTN, Gw: 14.50kg

Specification

Trademark

ETROSS OR OEM

Origin

China

Production Capacity

10000 Unit/Units / Year

Key features

4 SIM Quad Band Support: Supports GSM 850/900/1800/1900MHz quad band for global compatibility.

Dual Network Routing: Automatically routes calls between GSM and PSTN landlines with LCR.

4 FXS + 4 FXO Ports: Features 4 FXS GSM ports and 4 FXO PSTN ports for extensive connectivity.

Remote Management: Supports SMS remote manager, SIM lock, and network operator lock.

Wide PABX Compatibility: Good compatibility with any PABX, VoIP gateways, and billing systems.

Adjustable Settings: Adjustable dial interval (0.5-9s) and voice volume via telephone set.

IMEI Change Support: Optional IMEI change function for enhanced flexibility and privacy.

Low Cost Routing: Built-in LCR function ensures cost-effective call routing strategies.

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: ≤6.24h

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.

Product Q&A

Q:What is the difference between this device and a VoIP gateway?

This is a GSM Fixed Wireless Terminal that produces an analog FXS phone line, not a VoIP gateway. It allows regular phones to connect and use the GSM network instead of PSTN.

Q:Which GSM frequency bands are supported?

The device supports GSM 850/900/1800/1900MHz quad band, ensuring compatibility with various global networks.

Q:Can this device connect to a PABX or VoIP gateway?

Yes, it has good compatibility with any PABX, VoIP gateways (such as Cisco, Clarent), and billing meters.

Q:What are the main features for call management?

It supports DTMF Caller ID, LCR (Low Cost Routing), auto routing between GSM and PSTN, and SMS remote management.

Q:Is customization available for this product?

Yes, ODM service is available, and customization from samples is supported. The model number is Ets-4S.