Internal DIP Switches | 3Com 3C13751, 3C13759, 3C13701, 3C13880

Models: 3C13751 3C13701 3C13840 3C13759 3C13880 3C13701 3C13751 3C13755 3C13759 3C13840 3C13880

3Com Router 5000 and Router 6000 v2.41	Chapter 3
Module Guide	Multifunctional Interface Modules (Router 5000)

In addition, a 75-ohm to 120-ohm adapter is provided. For the pinouts of cables, see Low-End and Mid-Range Series Routers Cable Manual.

3.8.5 Internal DIP Switches

Router 2 and 4-Port CE1/PRI MIM and modules provide internal DIP switches, and the setting of DIP switches decides the interface impedance and grounding mode.

Table 3-21Correlation between DIP switches of Router 2 and 4-Port CE1/PRI MIM and modules and E1 interface

Module

DIP	S1
switch	S1
switch

E1	Interface
interface	0

2-port		4-port

S1	S3	S4	S5

Interface	Interface	Interface	Interface
0	1	2	3

By default, all the DIP switches for Router 2 and 4-Port CE1/PRI MIM and modules are set to ON, as illustrated in the following figure:

on 1

Figure 3-44Default setting of DIP switches for Router 2 and 4-Port CE1/PRI MIM and modules

Description of DIP switch settings is given in the following table for Router 2 and 4-Port CE1/PRI MIM and modules:

Table 3-22Description of DIP switch settings of Router 2 and 4-Port CE1/PRI MIM and modules

DIP	Description	Configuration of	Configuration of
DIP	Description	75-ohm impedance	120-ohm impedance
		75-ohm impedance	120-ohm impedance

1BIT	75-ohm/120-ohm	ON	OFF
	selection switch
2BIT	selection switch	ON	OFF
2BIT		ON	OFF

3-37

3C13751, 3C13701, 3C13840, 3C13759, 3C13880 specifications

The 3Com 3C13880 and 3C13840 are notable components within the realm of networking technology, primarily designed for enterprise-grade solutions. These devices belong to the 3Com family, which has long been recognized for its commitment to developing robust networking products tailored to facilitate efficient data transfers and improve connectivity across various platforms.

One of the standout features of the 3C13880 is its high-performance capabilities. This model supports advanced functions such as load balancing and fault tolerance, critical for maintaining optimum network performance in high-demand environments. Additionally, it supports various protocols, including Ethernet and Token Ring, making it versatile and adaptable to existing infrastructure. The device accommodates a wide range of network transmissions, ensuring seamless integration and operation within diverse network ecosystems.

In terms of connectivity, the 3C13880 is equipped with multiple ports, allowing for extensive device interconnectivity. This feature is particularly beneficial in large organization settings, where multiple devices, such as servers and workstations, need to communicate effectively. Coupled with high-speed data transmission rates, this model ensures minimal latency, enhancing overall network efficiency.

On the other hand, the 3C13840 is designed with a focus on cost-efficiency without sacrificing performance. This model provides essential networking features suitable for smaller business environments or those seeking budget-friendly options. It delivers reliable throughput and the ability to support a moderate number of users, making it ideal for small to mid-sized offices.

Both the 3C13880 and 3C13840 incorporate technologies that prioritize security and reliability. Features such as VLAN support and QoS settings help optimize network performance while ensuring the security and integrity of data are maintained. The devices also support management tools that allow administrators to monitor network performance in real time, facilitating quick troubleshooting and enhancing overall network management.

In summary, both the 3Com 3C13880 and 3C13840 devices stand out in networking technology by offering unique features tailored to different organizational needs. While the 3C13880 appeals to enterprises needing high performance and robust capabilities, the 3C13840 provides an accessible option for those requiring effective and budget-conscious networking solutions. The legacy of 3Com continues to be evident in these products, reflecting their innovative approach to addressing the dynamic demands of modern networking.

3.8.5 Internal DIP Switches

2-port

Figure 3-44Default setting of DIP switches for Router 2 and 4-Port CE1/PRI MIM and modules

Description of DIP switch settings is given in the following table for Router 2 and 4-Port CE1/PRI MIM and modules:

Table 3-22Description of DIP switch settings of Router 2 and 4-Port CE1/PRI MIM and modules

2BIT

OFF

3C13751, 3C13701, 3C13840, 3C13759, 3C13880 specifications