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Title: Cisco VG450 Analog Voice Gateway Data Sheet
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Data Sheet
Cisco VG450 Analog Voice Gateway
The Cisco® VG450 High-Density Analog Voice Gateway enables an IP telephony
solution to continue using traditional analog devices while taking advantage of the
productivity afforded by IP infrastructure (Figure 1).
The Cisco Unified Communications portfolio of voice and IP communications products and applications enables
organizations to communicate more effectively - helping them to streamline business processes, reach the right
resource the first time, and improve revenue sales and profitability. The Cisco Unified Communications portfolio is
a critical part of the Cisco Business Communications Solution - an integrated solution for organizations of all sizes
that also includes network infrastructure, security, and network management products, wireless connectivity, and a
lifecycle services approach, along with flexible deployment and outsourced management options, end-user and
partner financing packages, and third-party communications applications.
Figure 1.
Cisco VG450 High-Density Analog Gateway
The Cisco VG450 High-Density Analog Gateway is a Cisco IOS-XE® Software-based analog phone gateway. It
connects analog phones, fax machines, modems, and speakerphones to an enterprise voice system based on
Cisco Unified Communications Manager (UCM). The tight integration with the IP-based phone system is
advantageous for increased manageability, scalability, and cost-effectiveness. Businesses can also use the Cisco
VG450 with Cisco Unified Communications Manager Express to effectively augment an Integrated Services Router
(ISR) environment. Either topology environment will support business needs for high concentration of analog voice
ports for modem calls, fax calls, and analog supplementary services (Figure 2).
The Cisco VG450 offers Cisco IOS-XE Software manageability on analog phone lines to enable them to be used
as extensions to the Cisco Unified Communications Manager or Cisco Unified Communications Manager Express
system. The Cisco VG450 is offered in a 19-inch rack-mount chassis form.
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Features and benefits
● Cisco IOS-XE Software-based hardware: The hardware includes uniform Cisco Command-Line Interface
(CLI) and Simple Network Management Protocol Version 3 (SNMPv3) support for ease of gateway
configuration and operation.
● Robust voice quality: Cisco experience in providing toll-quality packet-voice service helps ensure that the
Cisco VG450 provides the clear, robust voice quality end users have come to expect from telephony
services.
● Investment protection: Customers can continue to use existing analog phones, fax machines, and modems
while taking advantage of IP telephony. Basic analog phone connectivity is needed when the infrastructure
(wiring) or application does not support or require IP phones. The Cisco VG450 is the ideal platform to
support centralized and highly concentrated analog phone line deployments, allowing organizations to
deploy IP telephony without having to purchase IP phones for all users and to continue using existing
devices. The Cisco VG450 can also be used in a Cisco Unified Communications Manager Express
environment and migrated to Cisco Unified Communications Manager deployment with 100-percent
investment protection.
● High availability: The Cisco VG450 has four Gigabit Ethernet ports to enable link redundancy configurations
toward the LAN. Customers will experience less voice downtime due to WAN link failure.
● Cisco VG450 powered by high-performance multicore processors: In this platform, power redundancy will
be available by installing an optional integrated Cisco Redundant Power System (RPS), thereby decreasing
network downtime and protecting the network from power-supply failures. DC PSU will be available by
1H2019.
● Reduced barrier to entry: The Cisco VG450 provides a low-cost alternative for low-end analog phones and
allows organizations to take advantage of IP telephony with a lower overall IP telephony investment.
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Figure 2.
Cisco VG Integration with Cisco Unified Communications Manager
Figure 3.
Cisco VG Integration with Cisco Unified Communications Manager Express
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Analog phone connectivity
The Cisco VG450 is ideal for analog phone deployments ranging from centralized to sparsely concentrated or
distributed topologies. It provides a high level of availability at locations with Media Gateway Control Protocol
(MGCP) Fallback, with ease of manageability using Cisco IOS-XE Software monitoring features. It offers many
supplementary analog calling features depending on the call control and signaling type used. Refer to Table 1 for
the supplementary analog calling features available.
Table 1.
Analog supplementary features available on Analog voice gateways
Skinny Client Control
Protocol (SCCP) Features
with Cisco Unified
Communications Manager
SCCP Features with
Cisco Unified
Communications
Manager Express
Session Initiation Protocol
(SIP) Features with Cisco
Unified Communications
Manager
Basic call
X
X
X
Call forward all
X
X
Call forward busy
X
X
Call forward cancel
X
X
Call forward no answer
X
X
Call hold or resume
X
X
X
Call pickup group
X
X
Call pickup local
X
X
Call transfer blind
X
X
Call transfer consultative
X
X
X
Call waiting
X
X
X
Caller ID
X
X
X
Caller ID on call waiting
X
X
X
Malicious caller ID
X
Conference call
Up to 3 parties
Up to 3 parties
Up to 3 parties
Impromptu conference call
Up to 3 parties
Up to 3 parties
Meet-me conference call
X
X
Directed call park
X
Directed call pickup
X
Directed call pickup of ringing extension
X
Redial
X
X
Speed dial
X
X
Call toggle
X
X
X
Music on Hold (MoH)
X
Shared-line support*
X
Shared line - privacy
X
Precedence and preemption
X
Call back on busy
X
DC voltage visible message waiting
indication (VMWI)
X
*Simultaneous ringing, hold, and resume across analog and IP phone
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The Cisco VG450 supports Feature Access Codes (FAC) in conjunction with Cisco Unified Communications
Manager and Cisco Unified Communications Manager Express. Refer to Cisco Unified Communications Manager
and Cisco Unified Communications Manager Express documentation for details.
Fax and modem connectivity
The Cisco VG450 supports fax machines and modems. When using fax machines, VG450 supports T.38 fax relay
and fax pass-through. T.38 Fax Relay technologies allow transfer of faxes across the network with high reliability
using less bandwidth than a voice call. All modems can be connected to the Cisco VG450 and will be transferred
over the network using modem pass-through.
Protocols supported
● SCCP
● H.323v4
● MGCP
● SIP
● Real-Time Transport Protocol (RTP)
● Secure Real-Time Transport Protocol (SRTP)
● Trivial File Transfer Protocol (TFTP)
● HTTP server
● SNMP
● Telnet
● Dynamic Host Configuration Protocol (DHCP)
● Domain Name System (DNS)
● Call survivability - MGCP failover to an H.323 connection to the SRST router
● T.38 Fax Relay, and modem pass-through
● Support G.711, and G.729a
● RADIUS and TACACS+ for Telnet and authorization
Support for high density analog voice modules on VG450
VG450 leverage new generation of high density analog voice modules to provide modular solution with flexibility to
configure FXS and FXO port density.
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Figure 4.
High density analog voice modules for VG450
Cisco High-Density Analog Voice and Fax Service Modules are available in either a single-wide or double-wide
form factor, as depicted in Table 1.
Table 2.
Form factors
Model
Picture
SM-X-8FXS/12FXO
● Single-wide service module
SM-X-16FXS/2FXO
● Single-wide service module
SM-X-24FXS/4FXO
● Single-wide service module
SM-X-72FXS
● Double-wide service module
The new generation of Cisco High-Density Analog Voice and Fax Service Modules improves upon the previous
high-density analog and digital extension modules (EVMs). These improvements are highlighted below:
● On-board Digital Signal Processor (DSP): The FXO and FXS service modules contain an onboard DSP
and don’t require the router to have a dedicated Packet Voice DSP Module (PVDM) on the motherboard.
The DSP on the voice module is necessary for the voice features. It also provides for echo cancellation of
up to 128-ms echo-tail length for demanding network conditions.
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● FXS-E (extended loops) support: FXS ports on the new modules support FXS-E with the following details:
◦ Higher loop current (35 mA) to accommodate specialty phones
◦ Longer loop length for loops with 26 AWG wire, up to 11,000 feet (3400 meters)
◦ Higher ringing voltage (65 Vrms, no load)
◦ The SM-X-72FXS module supports two FXS-E modes:
● Mode 1 (default): First 16 ports are FXS-E enabled, with the remaining 56 ports as regular FXS.
● Mode 2: First 56 ports are FXS-E enabled, with the remaining 16 ports disabled.
Note: Switching between the modes requires reload of the ISR chassis.
Table 2 summarizes the supported FXO failover bypass feature in each service module.
● FXO failover bypass ports: A failover bypass port, also called a failover trunk bypass, provides a way to
use designated analog phone ports to make phone calls through the PSTN during a power outage.
Table 3.
Feature and port comparison
Part number
Number of FXS ports
Number of FXO ports
FXO failover bypass ports
FXS-E enabled ports
SM-X-8FXS/12FXO
8
12
8
8
SM-X-16FXS/2FXO
16
2
2
16
SM-X-24FXS/4FXO
24
4
4
16
SM-X-72FXS
72
–
–
Mode 1: 16 (FXS-E)/ 56 (FXS)
Mode 2: 56 (FXS-E)/16 (disabled)
Analog and digital voice NIM (Network Interface Module) support on VG450
VG450 allows to mix and match the high density analog voice modules (Single wide and double wide module slots)
along with FXS/FXO Network Interface Modules (NIM) on the chassis to obtain optimal density for FXS and FXO
ports in a single chassis.
Following are valid hardware combination options for high density analog voice modules in service module slot for
VG450 bundles.
VG450-144FXS/K9
● Two SM-X-72FXS modules on VG450 for 144FXS Ports (top and bottom DW slots).
VG450-72FXS/K
● One SM-X-72FXS module (bottom DW slot) with at least one single-wide high density analog voice module
in top slot (mandatory). Max two single-wide high density analog voice service module in top slot.
● Only double wide high density module (SM-X-72FXS) supported in bottom slot.
VG450/K9
● Chassis only without any modules or NIMs.
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Figure 5.
Cisco FXO, FXS, and Combo 2FXS/4FXO NIMs Compatible with VG450
Following Analog Voice NIM modules are supported in the NIM slot for VG450
Table 4.
Analog Voice NIM module support on VG450
Part Number
Number of Ports
Product Description
NIM-2FXO
2
2-port Network Interface Module - FXO (Universal)
NIM-4FXO
4
4-port Network Interface Module - FXO (Universal)
NIM-2FXSP
2
2-Port Network Interface Module - FXS, FXS-E and DID
NIM-4FXSP
4
4-Port Network Interface Module - FXS, FXS-E and DID
NIM-2FXS/4FXOP
6
2-Port FXS/FXS-E/DID and 4-Port FXO Network Interface Module
NIM-4E/M
4
4-Port E/M Network Interface Module
NIM-2BRI-NT/TE
2
2-Port BRI Network Interface Module
NIM-4BRI-NT/TE
4
4-Port BRI Network Interface Module
Additionally, VG450 support T1E1 Voice Network Interface Modules in NIM slots for VG450.
The T1/E1 modules contain an onboard Cisco Packet Voice Digital Signal Processor Module 4 (PVDM4) slot,
which requires a fourth-generation PVDM4 module. A PVDM4 on the T1/E1 module is necessary for the voice
features.
The PVDM4 also provides for echo cancellation of up to 128-ms echo-tail length for demanding network conditions.
Figure 6.
Cisco T1/E1 NIMs Compatible with VG450
Table 5.
Digital Voice NIM module support on VG450
Part Number
Number of Ports
Product Description
NIM-1MFT-T1/E1
1
1 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module
NIM-2MFT-T1/E1
2
2 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module
NIM-4MFT-T1/E1
4
4 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module
NIM-8MFT-T1/E1
8
8 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module
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● SM-X-NIM-ADPTR is not supported on SM slots for VG450
● There are no PVDM slots on VG450 motherboard.
Software compatibility
VG450 does not natively support CUBE (Cisco unified border element), CUCME (Cisco unified call manager
express) or SRST (Survivable remote site telephony). Additionally VG450 does not support DSP farm capability.
These functions are only available in ISR4000.
Table 6.
Software compatibility
Product category
Compatible versions
Cisco IOS XE compatibility (4000 Series ISRs)
16.9.2 IOS-XE or later
Cisco Unified Communications Manager
10.5.2 (SU8), 11.5.1SU6 or higher, 12.0.1SU2 or higher
Cisco Unified Communications Manager Express
All version of CUCME compatible with IOS-XE 16.12.1 or higher
Third-party call control
IP-based trunk: SIP and H.323
High density analog voice service module technical specifications
Table 7.
Technical specifications for the FXS and FXO service modules for VG450
Feature
SM-X-8FXS/12FXO
SM-X-16FXS/2FXO
SM-X-24FXS/4FXO
SM-X-72FXS
Tip and ring interfaces for each FXS port (SLIC)
Interface
FXS/FXO (RJ-21)
RJ-21 ports 0 to 7: FXS
RJ-21 ports 8 to 19: FXO
FXS/FXO (RJ-21)
RJ-21 ports 0 to 15: FXS
RJ-21 ports 16 and 17:
FXO
FXS (RJ-21), FXO (RJ-11)
RJ-21 ports 0 to 23: FXS
RJ-11 ports 24 to 27: FXO
FXS (RJ-21)
Address signaling
formats
In-band DTMF
Out-of-band pulse
(8 to 12 pps)
In-band DTMF
Out-of-band pulse
(8 to 12 pps)
In-band DTMF
Out-of-band pulse
(8- to 2 pps)
In-band DTMF
Out-of-band pulse
(8 to 12 pps)
FXS signaling formats
FXS loop-start, ground-
start, and DID signaling
FXS loop-start, ground-
start, and DID signaling
FXS loop-start, ground-start,
and DID signaling
FXS loop-start, ground-start,
and DID signaling
FXS loop resistance
● Up to 600 ohms (including phone or terminal equipment) for short-loop-length port
● Up to 1400 ohms (including phone and terminal equipment) for long-loop-length port
DID loop resistance
● Up to 1800 ohms (including terminal equipment)
On-hook voltage
● -44V
Off-hook loop current
● 25 mA (maximum) for short-loop-length port
● 35 mA (maximum) for long-loop-length port
Ring tone
● Configurable for different country requirements
Ring voltage
● 54 Vrms into 5 ringer equivalence numbers (RENs) at zero-loop-length port (balanced) (short-loop-length port)
● 65 Vrms into 2 RENs at zero-loop-length port (balanced) (long-loop-length port)
Ring frequency
● 20, 25, 30, and 50 Hz
REN loading
● 5 RENs per port (short-loop-length port)
● 2 RENs per port (long-loop-length port)
● For each SM-X-72FXS, Max 40 total REN load in Mode 1 and X total REN load in Mode 2
RJ-11 FXS port
terminating impedance
option
● 600c, 600r, 900c, 900r, complex1, complex2, complex3, complex4, complex5, and complex6
Disconnect supervision
● Power denial (calling party control and far-end disconnect)
Caller ID
● On-hook transmission of frequency-shift-keying (FSK) data
● Support for DTMF caller ID
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Feature
SM-X-8FXS/12FXO
SM-X-16FXS/2FXO
SM-X-24FXS/4FXO
SM-X-72FXS
FXS loop length
● Short-loop-length port: 3000 ft (900 m) with 26 AWG, 5500 ft (1700 m) with 24 AWG
● Long-loop-length port: 11,000 ft (3400 m) with 26 AWG, 18,000 ft (5500 m) with 24 AWG
Ring Waveform
● Sine wave if no DC offset
VMWI
● FXS ports on HWIC slot supports FSK VMWI only
● FXS ports on SM-X-FXS modules support both FSK and DC voltage VMWI. Default to FSK. (DC voltage VMWI
is only supported with STCAPP protocol)
Cables
● Category 3 and Category 5
Environment
Operating temperature
● 32º to 104ºF (0º to 40ºC)
Non-operating
temperature
● -40º to 158ºF (-40º to 70ºC)
Voltage
12V from backplane
12V from backplane
12V from backplane
12V from backplane
Current
4.46A on 12V
5.86A on 12V
6.61A on 12V
10.68A on 12V
Power
53.55W
70.32W
79.37W
128.16W
Weight
1.90 lb (0.86 kg)
1.98 lb (0.90 kg)
2.12 lb (0.96 kg)
4.94 lb (2.24 kg)
Dimensions (H x W x D)
1.58 x 7.44 x 7.6 in
4.02 x 18.90 x 19.30 cm
1.58 x 7.44 x 7.6 in
4.02 x 18.90 x 19.30 cm
1.58 x 7.44 x 7.6 in
4.02 x 18.90 x 19.30 cm
1.58 x 15.57 x 7.57 in
4.02 x 39.55 x 198.23 cm
Table 8.
Regulatory standards compliance: Safety and EMC
Specification
Description
Safety
● UL 60950-1
● CAN/CSA C22.2 No. 60950-1
● EN 60950-1
● AS/NZS 60950-1
● IEC 60950-1
Telecom
● TIA/EIA/IS-968
● CS-03
● TBR21 (FXO)
● ES 201 970 (FXS)
● S002, S003
● Homologation requirements vary by country and interface type. For specific country information, refer to the
online approvals data base at: https://www.ciscofax.com/.
EMC
● 47 CFR, Part 15
● CES-003 Issue 4
● EN55022 Class A/B
● CISPR22 Class A/B
● AS/NZS 3548 Class A
● VCCI V-3
● CNS 13438
● EN 300-386
Immunity
● EN 55024, CISPR 24
● EN50082-1
● EN 61000-6-1
● EN300-386
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VG450 technical specifications
Table 9 gives the Cisco VG450 technical specifications.
Table 9.
Cisco VG450 technical Specifications
Category
System
VG450
Processor
High-performance multicore processors
Memory DRAM (default) /(max)
8GB / 32GB – DDR4 SDRAM
Compact Flash (default) / (max)
8GB / 32GB
External USB 2.0 slots (type A)
2
Ethernet
Up to four 10/100/1000 Ethernet LAN ports
All four 10/100/1000 Ethernet LAN ports can support
Small Form-Factor Pluggable (SFP)-based connectivity in lieu of RJ-45 ports, enabling fiber
connectivity
Console/auxiliary (max)
A new, innovative, mini-B USB console port supports management connectivity when traditional serial
ports are not available
Traditional console and auxiliary ports are also available
Power
AC Input Voltage
100 to 240 VAC auto ranging
AC Input Current (max)
7.1 to 3.0Amp
AC input Frequency
47 to 63 Hz
AC input surge current
60 A peak and less than 5 Arms per half cycle
Maximum power with AC power
supply (watts)
1000W (no PoE)
Power Dissipation
230Watts (maximum consumption)
Redundant Power Supply
Optional integrated Redundant Power Supply (RPS). DC RPS is on roadmap
Physical
Width
17.25 inches (438.15 mm)
Height
5.22 x (132.6 mm)
Depth
18.8 inches (477.65 mm)
Weight (max)
40.4 lbs. (18.3 Kg)
Mounting
3 RU, 19 in. EIA/23 in
Environment
Operating Temperature
32 to 104ºF (0 to 40ºC)
Non-operating Temperature
-40 to 158ºF (-40 to 70ºC)
Operating Humidity
5 to 85%
Noise Level (max)
Sound Pressure: 54.3 dB typical, 68.9 dB maximum –
Sound Power: 66.3 dB typical, 81.0 dB maximum
On-Premise or Off-Premise
On premise only, restricted access area, permanent ground required, to be installed and serviced only
by trained professionals
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Homologation
High-Density Analog Voice and Fax Service Modules in VG450 are approved for the countries listed in Table 8 for
off-premises (FXO) and on-premises (FXS) connections. Approval for other countries is in progress. Refer to the
Cisco Telecom Approvals Website for approval progress for other countries:
https://tools.cisco.com/cse/prdapp/jsp/externalsearch.do?action=externalsearch&page=EXTERNAL_SEARCH.
Table 10.
Telecom approvals
SM-X-8FXS/12FXO
SM-X-16FXS/2FXO
SM-X-24FXS/4FXO
SM-X-72FXS
United States
United States
United States
United States
Canada
Canada
Canada
Canada
CE countries1
Canada
Canada
Canada
Australia
Australia
Australia
Australia
Japan
Japan
Japan
Japan
The CE mark is recognized in the following countries: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Gibraltar, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein,
Lithuania, Luxemburg, Malta, Monaco, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland, and United Kingdom.
Ordering information
To order this product, use the information provided in Table 11.
Table 11.
Ordering information
Product Number
Product Description
VG450/K9
Cisco VG450 High Density Voice over IP Analog Gateway
VG450-144FXS/K9
Cisco VG450 144 FXS Bundle. Leveraging two SM-X-72FXS
VG450-72FXS/K9
Cisco VG450 72 FXS with option to use two single wide analog voice and fax service module
SM-X-8FXS/12FXO
Single-Wide High Density Analog Voice Service Module with 8 FXS and 12 FXO
SM-X-16FXS/2FXO
Single-Wide High Density Analog Voice Service Module with 16 FXS and 2 FXO
SM-X-24FXS/4FXO
Single-Wide High Density Analog Voice Service Module with 24 FXS and 4 FXO
SM-X-72FXS
Double-Wide High Density Analog Voice Service Module with 72 FXS
Services and support
Using the Cisco Lifecycle Services approach, Cisco and our partners offer a broad portfolio of end-to-end services.
These services are based on proven methodologies for deploying, operating, and optimizing IP Communications
solutions. Initial planning and design services, for example, can help you meet aggressive deployment schedules
and minimize network disruption during implementation. Operate services reduce the risk of communications
downtime with expert technical support. Optimize services enhance solution performance for operational
excellence. Cisco and our partners offer a system-level service and support approach that can help you create and
maintain a resilient, converged network that meets your business needs.
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