Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

This chapter provides a brief description of the Cisco VG310 and Cisco VG320 voice gateways and contains the following sections:

Introduction to Cisco VG310 and Cisco VG320 Analog Voice Gateways

The Cisco VG310 and Cisco VG320 Analog Voice Gateways provide an intermediate path to enable the Time Division Multiplex (TDM) to IP transition.

Cisco VG310 and Cisco VG320 support the following interfaces:

  • Gigabit Ethernet

  • USB

  • Enhanced High-Speed WAN Interface Card (EHWIC), Voice Interface Card (VIC), and Voice WAN Interface Card (VWIC)


Warning
This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means by security. Statement 1017

The Cisco VG310 and Cisco VG320 chassis support the following:

  • Two 10/100/1000BASE-T Gigabit Ethernet ports

  • External compact flash memory

  • AC and DC power inputs

  • (For Cisco VG310 only)—24-analog Foreign Exchange Station (FXS) voice ports using one RJ-21 analog voice interface connector

  • (For Cisco VG320 only)—48-analog FXS voice ports using two RJ-21 analog voice interface connectors

Front Panel View

The following figure shows the front panel of the Cisco VG310 and Cisco VG320 chassis.

Figure 1. Front Panel of the Cisco VG310 and Cisco VG320 Chassis

Back Panel View

The following figures show the back panel views of the Cisco VG310 and Cisco VG320 chassis respectively.

Figure 2. Back Panel of the Cisco VG310 Chassis
Figure 3. Back Panel of the Cisco VG320 Chassis

Locating the Product Serial Number

The serial number label for the Cisco VG310 and Cisco VG320 Analog Voice Gateways is located on the back panel of the chassis, as shown in the following figure.

Figure 4. Locating the Product Serial Number



Note
The serial number for Cisco VG310 and Cisco VG320 is 11 characters long.

Interfaces and Service Capabilities of Cisco VG310 and Cisco VG320

The following table describes the physical ports and the services supported by each port type:

  • Two administrative ports—One console and one auxiliary

  • Two 10/100BASE-T Gigabit Ethernet LAN ports

  • Cisco VG310 is equipped with an RJ-21 port for connection to a distribution panel

  • Cisco VG320 has two RJ-21 ports for connection to a distribution panel


Note
WAN Interface is not supported on Cisco VG310 and Cisco VG320.
Table 1. Cisco VG310 and Cisco VG320 Analog Voice Gateway Interfaces and Service Capabilities
Port Interface Configuration Interface To Services Supported Details

Console

Port 0/0

EIA/TIA-232 asynchronous serial (data communications equipment)

ASCII terminal

Personal computer

Local administrative access

RJ-45 physical interface

Auxiliary

Port 0/1

EIA/TIA-232 asynchronous serial (data terminal equipment)

Modem

Remote administrative access

Data backup

RJ-45 physical interface

Gigabit Ethernet

Port 0/0, 0/1

1000BASE-T (802.3)

LAN

Data

RJ-45 physical interface

(For Cisco VG310 only)

RJ-21

24 analog FXS voice ports

Port 0/0/0 to 0/0/23

FXS (loop start or ground-start)

Analog phone, fax, or modem

Network side of key system

Network side of analog PBX

Analog voice/fax or modem

RJ-21 physical interface

(For Cisco VG320 only)

RJ-21

48 analog FXS voice ports

Port 0/0/0 to 0/0/23 and port 0/1/0 to 0/1/23

FXS (loop start or ground-start)

Analog phone, fax, or modem

Network side of key system

Network side of analog PBX

Analog voice/fax or modem

RJ-21 physical interface

Compact slot memory slot 0

Compact slot memory slot 0

—

—

Flash card

Physical Description and LEDs

All interface ports, connectors, and LEDs are on the back panel of the chassis.

The following figure describes the back panel features of Cisco VG310.

Figure 5. Back Panel Features of Cisco VG310
1 Chassis ground connection 10 Status LEDs for DC input power
2 FXS RJ-21 connector 11 On/off switch
3 Status LED for FXS RJ-21 connector 12 AC power input
4 Status LED for CompactFlash card 13 DC power input
5 CompactFlash card slot 14 USB connector
6 Status LED for mini USB 15 RJ-45 serial AUX port
7 Status LED for console 16 Mini USB connector
8 RJ-45 serial console port 17 EHWIC slot
9 Gigabit Ethernet ports (2)

The following figure describes the back panel features of Cisco VG320.

Figure 6. Back Panel Features of Cisco VG320
1 Chassis ground connection 11 On/off switch
2 FXS RJ-21 connector 1 12 AC power input
3 Status LED for FXS RJ-21 connector 1 13 DC power input
4 Status LED for CompactFlash card 14 USB connector
5 CompactFlash card slot 15 RJ-45 serial AUX port
6 Status LED for mini USB 16 Mini USB connector
7 Status LED for console 17 EHWIC slot
8 RJ-45 serial console port 18 FXS RJ-21 connector 2
9 Gigabit Ethernet ports (2) 19 Status LED for FXS RJ-21 connector 2
10 Status LEDs for DC input power

LED Indicators

The following table summarizes the LED indicators that are located on the chassis of both VG310 and VG320, but not on the removable modules or interface cards.

For descriptions of LEDs in removable modules and interface cards, see the applicable documentation for those products.

Table 2. Cisco VG310 and Cisco VG320 LED Indicators

LED

Color

Description

SYS

Green

Normal operation. System is receiving power.

Blinking green

Operating system boot up in progress.

Amber

Power supply is available, but the unit has an error condition.

Off

System is not receiving power.

ACT

Green

Indicates packet activity between the forwarding and routing engine and an I/O port.

Off

No packet transfers are occurring.

PVDM

Green

PVDM3 is detected and enabled.

Amber

PVDM3 is detected, but has an error condition.

Off

PVDM3 is not installed

CF

Green

Flash memory is being accessed. Do not remove the CompactFlash memory card.

Amber

CompactFlash error.

Off

Flash memory is not being accessed. Safe to remove the CompactFlash memory card, if required.

PWR

Green

System is running.

Off

System is off.

LNK

Green

Indicates that the Ethernet port has a link partner.

Off

No link available.

SPD

Green, blinking

Frequency of blinking indicates speed of the port.

For information about the LED blinking pattern, see Gigabit Ethernet Ports and LED Indicators.

Off

No link available.

SER CON

Green

Indicates that the RJ-45 port is the active console port.

Note 
When SER CON LED is On, the USB CON LED will be Off.

USB CON

Green

Indicates that the USB port is the active console port.

Note 
When USB CON LED is On, the SER CON LED will be Off.

Gigabit Ethernet Ports and LED Indicators

There are two RJ-45 Gigabit Ethernet (GE) ports (GE0/0 and GE0/1) on the Cisco VG310 and Cisco VG320 chassis. These ports support 10BASE-T, 100BASE-TX, and 1000BASE-T standards.

The LED indicators for the GE ports display a sequence of blinks followed by a pause to indicate the link speed. The following table describes the link speed indicated by the LED indicators of the GE ports.

Table 3. LED Indicator Pattern for GE Ports

LED Indicator Pattern

Link Speed

Blinks once followed by a pause

10 Mbps

Blinks twice followed by a pause

100 Mbps

Blinks thrice followed by a pause

1000 Mbps

Port Numbering Conventions

The following are the port numbering conventions for the Cisco VG310 chassis and Cisco VG320 chassis:

  • An external compact flash card is numbered CF 0.

  • 10/100/1000BASE-T ports are numbered 10/100/1000BASE-T 0/0 (bottom) and 10/100/1000BASE-T 0/1 (top).

  • (For Cisco VG310 chassis only)—FXS and E/M voice port numbering begins at 0/0/0 and extends to 0/0/23.

  • (For Cisco VG320 chassis only)—FXS and E/M voice port numbering begins at 0/0/0 and extends to 0/0/23 for FXS RJ-21 connector 1. For FXS RJ-21 connector 2, port numbering begins at 0/1/0 and extends to 0/1/23. To locate the FXS voice ports, see Physical Description and LEDs.

Hardware Features

This section describes the hardware features of Cisco VG310 and Cisco VG320 and includes the following:

Real-Time Clock

When the system powers up, the internal real-time clock with battery backup provides the system software with the time of day. This allows the system to verify the validity of the certification authority (CA) certificate. Cisco VG310 and Cisco VG320 have a lithium battery. This battery lasts for the duration of the life time of Cisco VG310 or Cisco VG320 under the operating environmental conditions specified for the chassis, and is not field replaceable.


Note
If the lithium battery unit in Cisco VG310 and Cisco VG320 fails, the unit must be returned to Cisco for repair.

Built-In Interface Ports

The following table summarizes the interface ports built into the chassis.

Table 4. Summary of Built-In Interfaces on Cisco VG310 and Cisco VG320

Data Ports

Management Ports

10/100/1000 GE RJ-45

USB Type A

Console Serial, RJ-45

Console Serial, Mini-USB (Type B)

Auxiliary, RJ-45

2

1

1

1

1

USB Serial Console Port

The Mini-USB Type B serial port is enabled to perform management tasks on Cisco VG310 and Cisco VG320. Before establishing physical connectivity between a personal computer and a voice gateway using this port, make sure that a Windows USB device driver is installed.

Removable and Interchangeable Modules and Cards

The following table summarizes the type of removable modules and cards that can be installed in Cisco VG310 and Cisco VG320 to provide specific capabilities.

Table 5. Removable and Interchangeable Modules and Cards

Modules and Cards

Internal or External

Description

EHWIC

External

The EHWIC slot on the chassis supports one EHWIC card. Legacy interface single-width cards such as WAN interface cards (WICs), voice interface cards (VICs), and high-speed WAN interface cards (HWICs) are supported in the EHWIC slot.

For a list of supported VICs and VWICs, see Supported Voice Interface Cards and Voice WAN Interface Cards.

Packet Voice Data Modules (PVDM3)

Internal

The PVDM slot on the motherboard supports only a PVDM3. Older PVDM cards are not supported.

Flash memory

External

A CompactFlash memory card stores the operating system software image. The CompactFlash memory card can have sizes of 512 MB, 1 GB, 2 GB, 4 GB, and 8 GB.

Cisco USB flash memory

External

A Cisco USB flash memory (USB 2.0 compliant) supports 1 GB of memory.

Note 
We recommend that you do not use third-party USB devices on Cisco VG310 or Cisco VG320. USB 1.x devices are also not supported on Cisco VG310 and Cisco VG320.

DC power supply (Optional)

External

Provides backup power using a 12-volt battery backup system if AC power is not available.

Supported Voice Interface Cards and Voice WAN Interface Cards

The EHWIC slot on the Cisco VG310 and Cisco VG320 chassis supports the following VICs and VWICs:

  • Cisco VIC3-2FXS/DID

  • Cisco VIC3-2FXS-E/DID

  • Cisco VIC3-4FXS/DID

  • Cisco VIC3-2E/M

  • Cisco VIC2-2FXO

  • Cisco VIC2-4FXO

  • Cisco VWIC3-1MFT-T1/E1

  • Cisco VWIC3-2MFT-T1/E1

  • Cisco VIC2-2BRI-NT/TE

Periodic Inspection and Cleaning

Periodic inspection and cleaning of the external surface of the voice gateway is recommended to minimize the negative impact of dust or debris. The frequency of inspection and cleaning is dependent upon the severity of the environmental conditions, but a minimum of every six months is recommended. Cleaning involves vacuuming the unit's air intake and exhaust vents.

Software Elements

The operating system for Cisco VG310 and Cisco VG320 is Cisco IOS software, which resides in the flash memory.

Configuration Connections

You can use an ASCII terminal or a PC to configure a Cisco VG310 or Cisco VG320 Analog Voice Gateway. The configuration can be performed in several ways:

  • Locally, with a direct connection through the console port

  • Remotely, with a connection through the auxiliary port and a modem

  • Through Telnet and TFTP