User`s guide
1-8  Introducing Visitor-Based Networking and YesWare
Software Release 2.30    YesWare Applications User’s Guide 08-01016-01
YesWare VBN transport systems
A YesWare VBN system can deliver service using EtherLoop modem pairs, 
Ethernet switches, or a combination of both EtherLoop and Ethernet transport 
systems. The following sections describe these YesWare VBN transport 
systems. 
EtherLoop-VBN 
EtherLoop is an Ethernet-based modem technology that enables TCP/IP data 
transmission simultaneously with voice service over the twisted-pair, 
Category 3 (CAT 3) telephone lines of a local loop. EtherLoop technology 
provides Ethernet-compatible service in locations out-of-range of standard 
Ethernet LANs. 
EtherLoop-VBN transport systems are ideal for data transmission in 
environments such as hotel rooms that have no existing data network 
infrastructure. EtherLoop delivers data transmission speeds comparable to 
Ethernet at 5,000 feet and reliable service up to 21,000 feet. In addition to 
guest room service, YesWare’s new Enhanced Modem Billing allows 
EtherLoop modem pairs to serve any VBN service area, including conference 
facilities and uncontrolled public areas. 
Note: EtherLoop-VBN transport systems that use Enhanced Modem 
Billing cannot be used simultaneously with Ethernet-VBN. See 
“Combined EtherLoop/Ethernet VBN” on page 1-12 and “VBN billing 
configurations” on page 1-17 for more information. 
EtherLoop-VBN data transport method
Visitor computers connect physically to an EtherLoop-VBN transport system 
as they would to a conventional Ethernet 10/100Base-T LAN, using an 
Ethernet network interface card (NIC) and a Category 5 (CAT 5) cable 
terminated with an RJ-45 connector. EtherLoop systems transmit TCP/IP data 
and voiceband traffic using modem pairs configured in a point-to-point 
architecture. EtherLoop modem pairs consist of a CPE (customer premise 
equipment) modem and CO (central office) modem. Table 1-2 describes the 
function of EtherLoop CPE and CO modems. 
Table 1-2
EtherLoop modem pair functions
EtherLoop 
Modem
Function
CPE 
modem
The CPE modem transmits visitor data and voice to its designated CO modem over the 
Category 3 (CAT 3) facility phone network. The CPE modem connects to the visitor 
computer through an RJ-45 connection on the back of the modem. The CPE modem also 
has two RJ-11 jacks on its backplane. One RJ-11 connects to a phone in the room, and the 
second RJ-11 connects to the wall-jack of the facility phone network. 
CO 
modem
The CO modem controls the traffic flow from the CPE modem to the YWS ETH 1 interface. 
The CO modem resides in an EtherLoop multiplexer shelf, typically located in the facility 
equipment room. The CO modem connects to the YWS ETH 1 interface via an intermediate 
Ethernet switch or hub. The CO modems must be on the same LAN segment as ETH 1. 










