UC520 8 and 16User Use Case
The UC520 chassis for 8 and 16 users is a 1.5U device with an external power module. This device comes in desktop form factor but can be mounted in a standard 19-inch rack with an add-on rack-mount kit for the chassis and its external power supply. It is order-able in several configurations based on the user count supported (either 8 or 16), whether an integrated wireless AP is desired, and the type of PSTN connectivity desired (either Basic Rate Interface [BRI] or Foreign Exchange Office [FXO]). The 8- and 16-user models come with a fixed packet voice data module, type 2 (PVDM2), the PVDM2-32, which is used for voice termination, conferencing, and transcoding.
Figure 11.1 depicts the front panel of the 8-user model with the FXO and integrated wireless options. The 16-user model with similar options has the same port configuration, because licensing is the key difference between the 8- and 16-user models. The 16-user models require an additional Catalyst Express switch to support the requirements for an additional eight data and PoE ports.
(Photo Courtesy of Cisco Systems, Inc. Unauthorized use not permitted.)
Figure 11.1 UC520 8- and 16-User Chassis with 4 FXO Ports
(Photo Courtesy of Cisco Systems, Inc. Unauthorized use not permitted.)
Figure 11.1 UC520 8- and 16-User Chassis with 4 FXO Ports
Moving from left to right in Figure 11.1, the ports are as follows:
1. Music on Hold (MoH) audio jack: This port is a 3.5-mm audio port for live audio feeds. The system passes audio feeds from this port into the small business network as a multicast stream. Although the system comes preconfigured with an MoH file that resides in compact flash, this file is not played when a live audio stream is connected to the MoH jack. MoH can fail back and forth between the live MoH audio jack and the file in compact flash. This failover typically takes about 30 seconds.
2. Console/Aux port: This port is usually used for system recovery or direct access to the UC520 IOS command line. This port can detect modems and can switch between Console and Aux port functionality. This port can be used for remote management when connected to a modem.
3. Power over Ethernet (PoE) ports: These ports are 10/100BASE-TX ports that can supply up to 15.4W of 802.3af or Cisco prestandard PoE power to any PoE device. The switch integrated into the UC520 chassis can support a maximum of 80W over its eight PoE ports. Port designations in IOS are FastEthernet 0/1/0-7.
4. Voice expansion port: This port is a traditional VWIC slot that enables PSTN connectivity to be expanded. This port supports the following interface cards: VIC-4FXS/DID, VIC2-2FXO, VIC2-4FXO, VIC2-2BRI-NT/TE, VIC2-FXS, VIC3-2FXS/DID, VIC3-4FXS/DID, and VWIC2-1MFT-T1/E1.
5. FXO ports: These four integrated Foreign Exchange Office ports are unique to the FXO version of the UC520 and are used for basic PSTN connectivity. Port designations in IOS are voice-port 0/1/0-3. These ports would be replaced by two BRI ports in the 8- and 16-user BRI model.
6. FXS ports: These four Foreign Exchange Station ports are found in every model of the UC520. These ports are used for integrating analog phone devices such as a fax machine, modem, or a traditional analog phone. Port designations in IOS are voice-port 0/0/1-3.
7. WAN port: This port is a 10/100BASE-TX port used to connect the UC520 to an external uplink. Typically this port would be used to connect to a cable modem or a DSL router for Internet access. By default, this port is configured to receive its IP address via DHCP and is considered an outside interface by the firewall feature set. This port is designated as FastEthernet 0/0 in IOS.
8. LAN expansion port: This port is a 10/100BASE-TX port used to uplink a Catalyst Express switch to support system expansion.
9. Integrated wireless AP: This integrated wireless access point is an 802.11b/g AP and is available only in the 8- and 16-user UC520 models.
Figure 11.2 illustrates the two-port BRI model of the 8- and 16-user UC520 chassis and highlights the fact that the integrated wireless access point is a factory-installable option.
In this figure, the wireless option has not been selected.
BRI Ports
BRI Ports
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Figure 11.2 UC520 8- and 16-User Chassis with Two BRI Ports lipngi
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Figure 11.2 UC520 8- and 16-User Chassis with Two BRI Ports
Continue reading here: The Cisco Mobility Express System
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