

We provide downloadable documents such as user manuals, product datasheet, product brochures, product leaflets, etc.


Together with our agents and distributors, we provide convenient local service and quality after-sales maintenance service. The standard service provided is 5×8 (5 days a week, 8 hours a day) technical service support, providing customers with maintenance, repair and remote technical support services through phone and e-mail.

The FAQ section summarizes the solutions to some problems in the installation, configuration and use of New Rock hardware and software products.



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(New Rock Technologies, Inc.) is a new generation of intelligent communication equipment and solution provider. We provide future-oriented intelligent communication products and services to customers such as telecom operators, governments, enterprises, etc.

Since the establishment 19 years ago, New Rock has always taken R&D as our core mission and insisted on independent innovation. New Rock has more than 80 certificates and honors, with 19 years of industry brand recognition and influence, and is the common choice of many customers!

New Rock has established a nationwide service system with Shanghai headquarters as the center and six branches or offices in Beijing, Guangzhou, Shenzhen, Shandong, Wuhan and Chengdu to provide customers with perfect pre-sales consultation and after-sales service.

Please leave your message for any needs, we will do our best to serve you!

Welcome to become New Rock partner! Hand in hand together to build a bright future!
News
A PRI (Primary Rate Interface) delivers voice over a T1 (North America, 23 channels) or E1 (most elsewhere, 30 channels) circuit—reliable but rigid, and increasingly being replaced by flexible SIP trunks.
Definition: PRI/E1/T1 are ISDN circuit-switched trunk standards: a T1 carries 23 voice channels (plus 1 signaling), an E1 carries 30. Each channel is a fixed concurrent call.
| PRI/E1/T1 | SIP Trunk | |
|---|---|---|
| Capacity | Fixed (23/30 channels) | Elastic, pay per channel |
| Physical | Dedicated circuit | Over your internet/MPLS |
| Scaling | Add circuits | Click to add channels |
| Cost | Higher, per-circuit | Lower, flexible |
An E1/T1 gateway (e.g., Newrock digital gateway) connects your PRI to a SIP-based IP-PBX, letting you migrate gradually—keep the circuit, modernize the core. This is a common step in legacy PBX modernization.
Yes—a digital gateway bridges PRI to your SIP IP-PBX.
Similar concept; E1 = 30 channels (Europe/Asia), T1 = 23 (North America).
For most, SIP's flexibility and cost win; keep PRI only where contracts or policy require.
A quality gateway adds negligible latency; size it for your channel count.
PRI/E1/T1 are dependable but inflexible. A digital gateway lets you adopt VoIP while preserving existing circuits—a pragmatic migration path.
Tel:021-61202700 / 52217917
Address:5/F Block B, Building 1, No.188 Pingfu Road, Xuhui District, Shanghai 200231, China
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