Chapter 1 Overview
Network Configuration Examples
1-20
Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
78-6511-05
Hotel Network Configuration
Figure 1-5 shows the Catalyst 2900 LRE XL switches in a hotel network
environment with approximately 200 rooms. This network includes a private
branch exchange (PBX) switchboard, a router, and high-speed servers.
Connected to the telephone line in each hotel room is a Cisco 575 LRE CPE,
which provides both telephone and Ethernet connections. A room telephone
connects to the CPE phone port. The hotel customer would connect a laptop or the
television set-top box to the CPE Ethernet port. The laptop and telephone,
connected to the CPE, share the same telephone line.
Note All telephones not directly connected to the hotel room CPE require
microfilters with a 300-Ohm termination. Microfilters improve voice call
quality when voice and data equipment are using the same telephone line.
They also prevent nonfiltered telephone rings and nonfiltered telephone
transitions (such as on-hook to off-hook) from interrupting the Ethernet
connection.
Through a patch panel, the telephone line from each room connects to a
nonhomologated POTS splitter, such as the Cisco LRE 48 POTS Splitter
(PS-1M-LRE-48). The splitter routes data (high-frequency) and voice
(low-frequency) traffic from the telephone line to the switch and PBX. The PBX
routes voice traffic to the PSTN. If a PBX is not available, a homologated POTS
splitter is required to connect to the PSTN. If a connection to a phone network is
not required at all, a splitter is not needed, and the switch can connect directly to
the patch panel.
Data to and from the laptop and IP multicast traffic for the television are
transferred through the LRE link, which is established between the CPE wall port
and the LRE port on a Catalyst 2900 LRE XL switch. The upstream and
downstream rates on the LRE link are controlled by a profile configured on each
LRE port. If the Catalyst 2900 LRE XL switches were connected to the PSTN
through a homologated POTS splitter, all LRE ports would use an
ANSI-compliant LRE profile named PUBLIC-ANSI.
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