1. What is an IPLC dedicated line?
　　IPLC is the abbreviation of the English phrase "International Private Leased Circuit", which refers to a user-dedicated communication line for cross-border data, voice and other comprehensive information services. In layman's terms, it refers to traditional dedicated lines, such as DDN, E1, etc., which are used for communication between two interconnected points, but IPLC is dedicated for cross-border use. For example, Shenzhen-Hong Kong IPLC, that is, point-to-point transmission from Shenzhen to Hong Kong without passing through the public network, is a complete intranet and can be considered a real dedicated line. This dedicated line does not go through the public network and therefore does not cross the wall at all. GFW will not know what you are transmitting.
　　Which is better, IEPL dedicated line or IPLC?
　　(1) IPLC features
　　Users rent bandwidth as needed and have exclusive access to the rented bandwidth;
　　A wide range of transmission rate options (N*64K-2Mbps, 45M, 155M);
　　Supports the transmission of comprehensive information such as voice, data, images, fax, and video; undertakes the safe, stable, high-speed, and low-error rate transmission of large amounts of data; and provides direct point-to-point connections between customers and branches around the world; (2) Main customer groups
　　Branches of foreign-funded enterprises in China;
　　Domestic enterprises and institutions with overseas branches;
　　Companies with high-quality data/voice/video communication needs with overseas; IDC service providers and distributors.
　　International dedicated line (IPLC intranet dedicated line) services provide end-to-end, manageable, and dedicated high-quality fully transparent digital circuits, which are widely used in the interconnection of multinational enterprises, banks, securities, education, Internet services, and other industries, and can better support video and voice applications. IPLC includes international SDH, DDN, ATM, and FR dedicated lines.
　　2. What is IEPL dedicated line?
　　IEPL is the abbreviation of the English phrase "International Ethernet Private Line". IEPL lines are layer 2 circuits that mainly provide high-quality Ethernet private line services for multinational companies. International Ethernet Private Line Service (IEPL) is an end-to-end managed bandwidth service solution that provides customers with unlimited scalable point-to-point dedicated cross-border communication services through a network platform.
　　(1) Main features and advantages of IEPL
　　Expand customer Ethernet connections and applications;
　　Use SDH transmission network and coverage capabilities to provide Ethernet private line connections that reach the world; low latency and high reliability;
　　The latest EoSDH technology ensures latency and reliability requirements and provides the same performance indicators as IPLC; enhanced network flexibility and scalability;
　　Unlike traditional network upgrade solutions, the minimum unit of IEPL service bandwidth adjustment is 2M. Customers can flexibly choose service bandwidth according to actual business needs; network upgrades can be automatically configured through the remote network management system without affecting existing services and equipment use. (2) Main customer groups
　　Branches of foreign-funded enterprises in China;
　　Domestic enterprises and institutions with overseas branches;
　　Companies with high-quality data/voice/video communication needs with overseas; IDC service providers and distributors.
　　IEPL is an end-to-end true Ethernet circuit. This means that you can operate the circuit without a router or CSU/DSU by configuring the circuit at the MAC address level. Although the cost of ILCL may be more expensive than IPLC, eliminating the cost of routers should be factored into your decision-making process. In addition, a pure Ethernet circuit will provide less jitter and higher performance than IPLC.
　　3. Which is better, IPLC or IEPL dedicated line? The difference between IPLC and IEPL dedicated line
　　(1) What is the difference between IPLC and IEPL dedicated line?
　　IPLC is an international dedicated leased power circuit that can be used as an end-to-end dedicated line. IPLC generally uses TDM power circuits that use time division multiplexing to use the same power circuit among many customers. The nature of TDM requires the use of CSU/DSU and wireless routing. Generally, a wireless router will include a CSU/DSU, and the most common wireless routers are manufactured by Cisco or Adtran.  
　　IEPL is an international Ethernet dedicated line. IEPL is a real end-to-end Ethernet circuit. This means that you can operate the circuit by configuring the circuit at the MAC address level without a wireless router or CSU/DSU.
　　IPLC is end-to-end, a real physical layer "dedicated line"; IEPL is end-to-end/multi-end, realizing the introduction of multi-end layer 2 devices. IPLC can realize the function of IEPL, a layer 2 "Ethernet dedicated line", through layer 2 devices, and obtain multi-end support at the same time; IPLC/IEPL can realize "shared dedicated lines" (local dedicated lines) through the public network like NAT through layer 3 devices, and only the lines across a certain section are dedicated lines.
　　IEPL international Ethernet dedicated lines are already available in most major areas. Therefore, you will see more IEPL circuits in the future.
　　(2) Which is better, IPLC or IEPL dedicated lines?
　　Although the cost of IEPL will be more expensive than IPLC, you should consider it in addition to the cost of wireless routing. In addition, pure Ethernet interface power supply circuits will have less jitter and higher performance than IPLC. But both IPLC and IEPL are designed to help global companies maintain their high-level customer service office environment with fast, reliable connections between dispersed regions. It is similar to an office network, but obviously on a larger scale. These private networks ensure that mission-critical hosting services serve the company and achieve global coverage.
　　For global companies that are considering entering the international market or have very high requirements for the network environment, IPLC/IEPL are excellent choices. But even those companies that want to stay local can benefit from the advantages of these private lines by using international dedicated lines. International dedicated lines improve your internal and external communications and help improve online customer service through faster and more reliable network connections.
　　IEPL's network transmission performance is better than IPLC, but the price is also more expensive than IPLC. For general enterprises and individual users, the use experience of IPLC and IEPL is not much different, and IPLC is more cost-effective. For individuals, using IPLC is more cost-effective than IEPL, but for high-end users of real-time collaborative office and online game acceleration in enterprises, IEPL will provide a better low-latency experience than IPLC.