How is SIM rotation triggered?

Rotation can be triggered by accumulated call duration, idle time, call count, consecutive failures, or low duration calls.

What voice codecs are available?

Supported codecs include G.711a/u law, G.723.1, G.726, and G.729AB.

Is there a minimum order quantity?

The minimum order quantity is 1 PC.

32 Ports 256 SIM SIP GoIP Gateway for Network Call 4G

Name: 32 Ports 256 SIM SIP GoIP Gateway for Network Call 4G
Brand: Shenzhen Etross Telecom Co., Ltd.
SKU: 2131235472

Guangdong, ChinaShenzhen Etross Telecom Co., Ltd.

US$1.00-2,100.00

1 Piece

Product profile

Customization

Available

Type

8 SIM Voice FWT

Protocol

Ipv4, TCP, UDP, Pppoe, DHCP, DNS, Nat, HTTP, FTP,

Number of Channels

8 Channels GSM VoIP Gateway GoIP Gateway

Color

Blue

Product Name

8 Channels GSM VoIP Gateway GoIP Gateway

Network

GSM

SIM Card Slot

256

API

Support

Bulk SMS/Voice

Support

SIM Card Rotation

Support

IMEI Change

Support

Dtmf & Tts & Ivr

Support

Firmware Update

HTTP/TFTP

Weight

5kg

Transport Package

1PCS/Carton

Specification

L41 X W29 X H12(cm)

Trademark

Etross or OEM

Origin

Shenzhen, China

HS Code

8517629300

Production Capacity

1000PCS/Month

Key features

High Capacity SIM Support: Supports up to 64 SIM cards with 8 concurrent GSM VoIP channels.

Advanced SIM Rotation: Features multi-SIM rotation based on call duration, usage time, and failure rates.

Anti-Block Encryption: Includes proxy server encryption and BTS rotation to prevent IP blocking.

Smart QoS Technology: Maintains high voice quality on both fast and slow internet lines.

Auto IMEI Management: Supports automatic IMEI change, generation, and modification.

Flexible Network Options: Built-in WiFi router and optional 4G module for mobile connectivity.

Comprehensive Protocol Support: Compatible with SIP V2.0, TCP, UDP, and various NAT traversal methods.

User-Friendly Web Interface: Allows easy configuration, firmware upgrade, and SIM balance inquiry via HTTP.

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: ≤6.12h

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.