This chapter describes the contents of your VNS system shipping package and the physical characteristics of the VNS front and back panels. It includes the following sections:
If the shipping container is damaged, or if any of the various shipping indicators show improper handling of the container, contact your local shipping representative.
Figure 3-1 illustrates the unpacking of the VNS.
Figure 3-1: Shipping Contents
The shipping container contains:
- VNS Processor (Either VNS-AC or VNS-DC)
- AC power cord
- 10Base-T Ethernet Cable
- RS449 to V.35 cable for Frame Relay Card (part number 72-1415-01)
- RS449 to X.21 cable for Frame Relay Card (part number 72-1416-01)
- 2 Pair 75-Ohm E1 coaxial cables (one pair for each E1 Network Interface Card)
- Rear-mounting brackets and fasteners (2 sets) for mounting
- Optional Motorola V.34R Modem
- Optional loopback plug for Frame Relay card
Three tapes:
- Tape 1. VNS Frame Relay Drivers
- Tape 2. VNS Software
- Tape 3. E1 Network Interface Card (NIC) Drivers
And a publication:
- Cisco StrataCom Voice Network Switching Installation and Operation, Release 2.2
Note Tape 1, VNS Frame Relay Drivers, and Tape 2, VNS Software Release, and Tape 3, E1 Network Interface Card Drivers have been preinstalled on the VNS at the factory. These tapes are provided for backup only.
Note The RS449 to V.35 cable or the RS449 to X.21 cable are ordered independently.
This section provides descriptions the front and rear-panels of the four VNS models:
- VNS-AC
- VNS-DC
- VNS-AC-E
- VNS-DC-E
The external physical differences in the VNS models are pointed out in this section.
The VNS-AC or VNS-DC front panel displays the Cisco logo and the product name. There are no functional components on the front of these models, shown in Figure 3-2. Each VNS-AC or VNS-DC also has a label on its left side, as seen from the front, which indicates its model number and serial number.
Figure 3-2: VNS-AC or VNS-DC
The VNS-AC-E or VNS-DC-E front panel, illustrated in Figure 3-3, displays the Cisco logo, the product name and the following two indicators:
- Power-On indicator indicates that the power is on.
- Status indicator is a tri-colored LED that indicates system status. The status indications are:
- Off-VNS is off.
- Blinking red-Unit booting, unit shutting down, factory installed soft-switch cable missing.
- Red-Unit temperature greater than TBD C.
- Green--Unit powered on and ready.
- Yellow-Reserved for future use.
- These status indications apply to both the front- and rear-panel Status LEDs.
Figure 3-3: VNS-AC-E or VNS-DC-E Front Panel
All physical connections are made to the VNS's rear panel. The VNS rear panel differs for AC- and DC-powered models. (See the section VNS Hardware and Software in Chapter 1 for a list of the current VNS models.)
The VNS-AC rear panel contains the components and connectors shown in Figure 3-4. The Power On/Off Switch is to the left of the AC-Power Input connector. Later models of the AC-powered VNS come with an AC-power cord clamp. This clamp secures to the bottom edge of the VNS chassis with a set screw, which can be loosened to slide the clamp over the AC-power cord.
Figure 3-4: AC-Powered VNS Rear Panel
Note Unlabeled connectors are not used in Voice Network Switching (VNS) applications.
The VNS-DC rear panel contains the components and connectors shown in Figure 3-5. As shown, the VNS-DC has inputs for two DC power inputs (DC Input A and DC Input B). Typically these DC inputs are from separate DC power sources to provide for protection against a DC power source failure. Each DC Input has its own On/Off Switch.
Figure 3-5: DC-Powered VNS Rear Panel
Note Unlabeled connectors are not used in Voice Network Switching (VNS) applications.
This section contains descriptions of the VNS-AC-E and VNS-DC-E rear panels.
The VNS-AC-E contains the components and connectors shown in Figure 3-6. The Power On/Off Switch is to the left of the AC-Power Input connector.
Figure 3-6: VNS-AC-E Rear Panel
The VNS-AC-E has the following connectors and switches:
- AC Power Switch,
, providing both graceful and emergency shutdown capability
- AC Power Connector (Single IEC 20)
- Power-On LED lights green when there is power to the unit
- Status LED providing the same indications as the front-panel Status LED
- Frame Relay Card RS449 connector
- Voice port 1 (E1 Network Interface Card) 75-ohm BNC connectors
- Voice port (E1 Network Interface Card) 75-ohm BNC connectors
- Ethernet Port RJ-45 Connector (referred to as a 10BaseT connector)
- Two Serial Port DB25 Connectors (for attaching a local terminal)
Note The factory-installed cable shown in
Figure 3-6 is known as the
soft-switch cable. It is installed from one of the DB25 connectors to a DB15 connector next to the AC power switch. If it is not installed, the Status LEDs will blink red.
Note Unlabeled connectors are not used in VNS applications.
The VNS-DC-E rear panel contains the components and connectors shown in Figure 3-7. As shown, the VNS-DC-E has inputs for two DC power inputs (DC Input A and DC Input B). Typically these DC inputs are from separate DC power sources to provide for protection against a DC power source failure. Each DC input has its own circuit breaker.
Figure 3-7: VNS-DC-E Rear Panel
The VNS-DC-E has the following connectors and switches:
- DC Power Switch,
,providing both graceful and emergency shutdown capability
- Two DC Power Connectors (Euro-style plugable terminal connector receptacles)
(Phoenix P/N DFK-MSTB 2,5/3-GF-5.08)
- Power-On LED lights green when there is power to the unit
- Status LED providing the same indications as the front-panel Status LED
- Two circuit breakers:
- Breaker A GOOD green LED is on when circuit breaker A is not tripped, off when circuit breaker is tripped
- Breaker B GOOD green LED is on when circuit breaker B is not tripped, off when circuit breaker is tripped
- Frame Relay Card RS449 connector
- Voice port 1 (E1 Network Interface Card) 75-ohm BNC connectors
- Voice port (E1 Network Interface Card) 75-ohm BNC connectors
- Ethernet Port RJ-45 Connector (referred to as a 10BaseT connector)
- Two Serial Port DB25 Connectors (for attaching a local terminal)
Note Unlabeled connectors are not used in VNS applications.
Note The factory-installed cable shown in
Figure 3-7 is known as the
soft-switch cable. It is installed from one of the DB25 connectors to a DB15 connector next to the DC power switch. If it is not installed, the Status LEDs will blink red.
The only status indicators on the rear panel of the VNS are the four LEDs on each E1 NIC. Figure 3-8 illustrates the location and the color of these LEDS. Table 3-1 describes what each LED indicates.
Figure 3-8: E1 NIC LEDs
Table 3-1: E1 NIC LEDs
| LED
| Function
|
|---|
| Green
| Link is active.
|
| Blue
| Loss of sync.
|
| Red
| Loss of carrier.
|
| Yellow
| Remote alarm.
|
Observe Safety Measures
To ensure safe performance as well as to maintain the integrity of your VNS, please observe a few safety measures as you proceed with this installation.
- Do not modify the internal or electrical assembly of VNS equipment.
- Protect the VNS from overheating; ensure that openings in the equipment are not blocked or covered. Never place the unit near any source of heat.
- Handle with care; rough treatment may damage sensitive components.
- Always turn off the power to the VNS before moving it.
