Avaya AVPP User manual

Avaya Voice Priority Processor
Installation
555-301-102
Part Number 72-8178-00
Revision C
Issue 4
May 2004

©2004, Avaya Inc.
All Rights Reserved, Printed in U.S.A.
Notice
All efforts were made to ensure that the information in this book was complete and accurate at the time of printing. However, information is subject to
change.
Avaya Web Page
The world wide web home page for Avaya is: http://www.avaya.com
Preventing Toll Fraud
Toll Fraud is the unauthorized use of your telecommunications system by an unauthorized party. For example, a person who is not a corporate employee,
agent, subcontractor, or working on your company’s behalf. Be aware that there is a risk of toll fraud associated with your system. If toll fraud occurs, it
can result in substantial additional charges for your telecommunications services.
Avaya Fraud Intervention
If you suspect that you are being victimized by toll fraud and you need technical assistance or support, call the Technical Service Center’s Toll Fraud
Intervention Hotline at 1.800.643.2353.
Providing Telecommunications Security
Telecommunications security of voice, data, and/or video communications is the prevention of any type of intrusion to, that is, either unauthorized or
malicious access to or use of, your company’s telecommunications equipment by some party.
Your company’s “telecommunications equipment” includes both this Avaya product and any other voice/data/video equipment that could be accessed via
this Avaya product (that is, “networked equipment”).
An “outside party” is anyone who is not a corporate employee, agent, subcontractor, or a person working on your company’s behalf. Whereas, a
“malicious party” is Anyone, including someone who may be otherwise authorized, who accesses your telecommunications equipment with either
malicious or mischievous intent.
Such intrusions may be either to/through synchronous (time-multiplexed and/or circuit-based) or asynchronous (character-, message-, or packet-based)
equipment or interfaces for reasons of:
• Utilization (of capabilities special to the accessed equipment)
• Theft (such as, of intellectual property, financial assets, or toll-facility access)
• Eavesdropping (privacy invasions to humans)
• Mischief (troubling, but apparently innocuous, tampering)
• Harm (such as harmful tampering, data loss or alteration, regardless of motive or intent)
Be aware that there could be a risk of unauthorized intrusions associated with your system and/or its networked equipment. Also realize that, if such an
intrusion should occur, it could result in a variety of losses to your company, including but not limited to, human/data privacy, intellectual property,
material assets, financial resources, labor costs, and/or legal costs).
Your Responsibility for Your Company’s Telecommunications Security
The final responsibility for securing both this system and its networked equipment rests with you – an Avaya customer’s system administrator, your
telecommunications peers, and your managers. Base the fulfillment of your responsibility on acquired knowledge and resources from a variety of sources
including but not limited to:
• Installation documents
• System administration documents
• Security documents
• Hardware-/software-based security tools
• Shared information between you and your peers
• Telecommunications security experts
To prevent intrusions to your telecommunications equipment, you and your peers should carefully program and configure your:
• Avaya provided telecommunications systems and their interfaces
• Avaya provided software applications, as well as their underlying hardware/ software platforms and interfaces
• Any other equipment networked to your Avaya products
Federal Communications Commission Statement
Part 15: Class A Statement. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instructions,
could cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in
which case the user will be required to correct the interference at his own expense.
Industry Canada (IC) Interference Information
This digital apparatus does not exceed the Class A limits for radio noise emissions set out in the radio interference regulations of Industry Canada.
Le Présent Appareil Nomérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la class A préscrites
dans le reglement sur le brouillage radioélectrique édicté par le Industrie Canada.
European Union Declaration of Conformity
The “CE” mark affixed to the equipment means that it conforms to the referenced European Union (EU) Directives listed below:
EMC Directive 89/336/EEC
Low-Voltage Directive 73/23/EEC
For more information on standards compliance, contact your local distributor.

Avaya Installation
Avaya Voice Priority Processor
Note concerning the Avaya Voice Priority Processor:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
Note concerning shielded cable:
Shielded cable is recommended for all external signal connections in order to maintain FCC Part 15
emissions requirements.
Note concerning the Avaya Wireless Telephones:
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
WARNING Changes or modifications to this equipment not approved by Avaya may cause this equipment
to not comply with part 15 of the FCC rules and void the user’s authority to operate this equipment.
WARNING Avaya products contain no user-serviceable parts inside. Refer servicing to qualified service
personnel.
Important Safety Information
Follow these general precautions while installing telephone equipment:
• Never install telephone wiring during a lightning storm.
• Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
• Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected
at the network interface.
• Use caution when installing or modifying telephone lines.
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Table of Contents
AVAYA VOICE PRIORITY PROCESSOR 1
Installation 1
1. ABOUT THIS DOCUMENT 6
1.1 Questions? 6
1.2 Icons and Conventions 6
2. AVAYA VOICE PRIORITY PROCESSOR OVERVIEW 7
2.1 Multiple Avaya Voice Priority Processors 7
2.2 The Timing function 8
2.3 Avaya Voice Priority Processor Capacity 9
2.4 System Diagram 11
2.5 System Components 13
2.6 The Front Panel of the Avaya Voice Priority Processor 15
3. INSTALLING THE AVAYA VOICE PRIORITY PROCESSOR 16
3.1 Required Materials 16
3.2 Locate the Avaya Voice Priority Processor 16
3.3 Install the Avaya Voice Priority Processor 16
4. CONFIGURING THE AVAYA VOICE PRIORITY PROCESSOR 18
4.1 Connecting to the Avaya Voice Priority Processor 18
4.2 The NetLink SVP-II System Menu 19
4.3 Network Configuration 20
4.4 Avaya Voice Priority Processor Configuration 22
4.5 Gateway Configuration 22
4.6 IP System Configuration 22
4.7 Change Password 26
5. SWAPPING/ADDING/DELETING AVAYA VOICE PRIORITY
PROCESSORS 27
5.1 IP System 27
5.2 Gateway 28
6. SOFTWARE MAINTENANCE 29
6.1 Software Updates 29
7. TROUBLESHOOTING VIA SYSTEM STATUS MENU 30
7.1 Error Status 31
7.2 Network Status 32
7.3 Software Version 34
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1. About This Document
This document explains how to configure and maintain the Avaya Voice Priority
Processor (AVPP) within the telephony system.
1.1 Questions?
Avaya wants you to have a successful installation. If you have questions please contact
Avaya Technical Support at 1 800 242-2121 (USA only) or your local authorized
Avaya dealer. Icons and Conventions
This manual uses the following icons and conventions.
Caution! Follow these instructions carefully to avoid danger.
Note these instructions carefully.
NORM This typeface indicates a key, label, or button on the AVPP or Wireless
Telephone.
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2. Avaya Voice Priority Processor Overview
Avaya Voice Priority Processor (AVPP) utilizes SpectraLink Voice Priority (SVP) as the
quality of service (QoS) mechanism that is implemented in the Wireless Telephone and
access point (AP) to enhance voice quality over the wireless network. SVP gives
preference to voice packets over data packets on the wireless medium, increasing the
probability that all voice packets are transmitted efficiently and with minimum delay.
SVP is fully compliant with the IEEE 802.11 and 802.11b standards.
The AVPP is an Ethernet LAN device that works with the AP to provide QoS on the
wireless LAN. Voice packets to and from the Avaya Wireless Telephones are intercepted
by the AVPP and encapsulated for prioritization as they are routed to and from an IP
telephony server or gateway.
SVP is required for QoS because the current IEEE 802.11b wireless LAN standard
provides no mechanism for differentiating audio packets from data packets. This standard
is undergoing revision to version 802.11e to provide functionality similar to SVP in an
industry standard thus ensuring high-quality voice in a mixed client environment. Once
802.11e is ratified, Avaya and its 802.11 technology partners will adopt the new
specification.
IP multicast addresses are used by the Avaya 3626 Wireless Telephone.
This requires that multicasting be enabled on the subnet used for the
Wireless Telephones, AVPP, and Telephony Gateways.
Routers are typically configured with filters to prevent multicast traffic
from flowing outside of specific domains. The wireless LAN can be
placed on a separate VLAN or subnet to reduce the effects of broadcast
and multicast traffic from devices in other network segments.
2.1 Multiple Avaya Voice Priority Processors
Multiple AVPP environments are those that have more than one AVPP in the same
subnet in order to accommodate larger systems and higher call capacity.
In a system comprised of multiple Avaya Voice Priority Processors using an IP protocol,
a master AVPP must be identified. The master SVP Server must have a static IP address.
The Wireless Telephones and the other AVPP’s locate the master by using a static IP
address, DHCP, or DNS. The loss of a non-master AVPP does not significantly affect the
operation of the remaining Avaya Voice Priority Processors. However, the loss of the
master AVPP results in a loss of all communication between all of the Avaya Voice
Priority Processors. This also means that the loss of the master AVPP results in the loss
of all active calls and Wireless Telephones cannot check-in until communication with the
master is reestablished.
In a Gateway system using multiple Avaya Voice Priority Processors, there is no
“master” server.
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2.2 The Timing function
In the Gateway environment, Avaya Voice Priority Processors provide the "timing"
function for active calls. In multiple AVPP environments, the active calls are distributed
across the Avaya Voice Priority Processors. In the IP PBX environment, Avaya Voice
Priority Processors provide the connection or "gateway" to the IP PBX for the Wireless
Telephones, and the "timing" function for active calls. This "gateway" function is
distributed across the Avaya Voice Priority Processors.
In both environments, the number of active Avaya Voice Priority Processors is
determined dynamically. Whenever Avaya Voice Priority Processors are added to or
removed from the system, the distribution of "timing" function for active calls, as well as
the "gateway" function in the IP PBX environment, is affected.
In a Gateway environment, the addition of an AVPP is detected as soon as the new AVPP
is up and running. The new AVPP will immediately start providing the “timing” function
for the appropriate Wireless Telephones. The user should not detect any change. The
removal of an AVPP is detected within one minute. During this time, any Wireless
Telephone that was using the AVPP that was removed will be affected. If the Wireless
Telephone was not in a call, it may lose contact with its Gateway, resulting in a check-
out/check-in sequence. If the Wireless Telephone was in a call, the audio will be lost and
the call will be dropped.
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2.3 Avaya Voice Priority Processor Capacity
The AVPP requires a Cat. 5 cable connection between its network port and the Ethernet
switch. The AVPP auto-negotiates to the type of port on the Ethernet switch and supports
10Base-T, 100Base-T, full-duplex and half-duplex port types. The maximum number of
calls a single AVPP is able to handle depends on LAN factors per the following table:
Supported Calls
10Base-T 100Base-T
Number of
Wireless
Telephones
Supported
IP Gateway 10 80 500
Gateway 10 120 640
Multiple Avaya Voice Priority Processors can be used in both Gateway and IP system
environments.
The table below shows the capacity of Gateways in a multiple AVPP environment.
SVP
Servers Calls per server Total Calls Gateways Erlangs #WTs
15% use #WTs 25% use #WTs 50% use
1 120 120 15 103 240 240 206
2 120 240 30 219 480 480 438
3 120 360 40 336 640 640 640
The table below shows the capacity of a multiple AVPP environment.
AVPP
Servers Calls per server Total Calls Erlangs #WTs 10%
use #WTs 15% use #WTs 20% use
1 80 80 65 500 433 325
2 64 128 111 1000 740 555
3 60 180 160 1500 1067 800
4 58 232 211 2000 1407 1055
5 57 285 262 2500 1747 1310
6 56 336 312 3000 2080 1560
7 56 392 367 3500 2447 1835
8 55 440 415 4000 2767 2075
9 55 495 469 4500 3127 2345
10 55 550 524 5000 3493 2620
11 55 605 578 5500 3853 2890
12 54 648 621 6000 4140 3105
13 54 702 674 6500 4493 3370
14 54 756 728 7000 4853 3640
15 54 810 782 7500 5213 3910
16 54 864 836 8000 5573 4180
In an IP system using subnets to differentiate telephony areas, each subnet
must have its own AVPP as well as access points. This is not considered a
multiple AVPP environment since the Avaya Voice Priority Processors
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are separated by the subnet architecture. Multiple AVPP environments are
those that have more than one AVPP in the same subnet in order to
accommodate a high volume of wireless telephony traffic.
Wireless Telephones cannot roam between subnets. Any call in progress
will be dropped when the user moves out of range. In order to resume
functionality in the new subnet area, the user must power cycle the
Wireless Telephone. Once the Wireless Telephone achieves
communication within the new subnet, normal functionality will return.
Further note that this assumes all access points in each subnet use the
same ESSID and Encryption key.
Subnets are not recommended in Gateway environments.
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2.4 System Diagram
The following diagram shows the AVPP residing on a network with an IP telephony
server, wireless LAN access points, and Ethernet switch:
(IP telephony system example)
Avaya Voice Priority
Processor
(
s
)
Ethernet switch
Wireless
POS
Wireless
Telephones
access point
Avaya IP
Phones
Avaya Call Server
PSTN
or
PBX
access point
Ethernet cable
Phone cable
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(Gateway system example)
Avaya Voice Priority
Processor
Ethernet Switch
access
p
oint
Wireless
POS
Wireless
Telephones
access
p
oint
Avaya IP
Phones
optional
PBX
Gateway
Gateway
Gateway
Gateway
Gateway
Device supplied by
SpectraLink
CAT 5 cable
25 pair cable
Multiple phone cables
Phone cable
A
dministrative
computer
Demarc block
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2.5 System Components
• Avaya SNP and RNP Wireless Telephones – Employees can carry Wireless
Telephones to make and receive calls as they move throughout the building. The
Wireless Telephones are to be used on-premises; they are not cellular or satellite
phones. They are connected to the facility's existing telephone system and to the
Gateway or IP Gateway. Just like wired telephones, they can receive calls directly,
receive transferred calls, transfer calls to other extensions, and make outside and long
distance calls (subject to the restrictions applied in your facility.)
The Avaya SNP Wireless Telephone is a lightweight, durable handset specifically
designed for mobile workplace use within a facility. The Avaya RNP Wireless
Telephone offers a durable design with push-to-talk functionality.
Avaya Wireless Telephones can operate on an 802.11b wireless network and can
operate at a transmission rate of up to 11Mb/s.
• Gateway – serves as the connecting point, or gateway, between the LAN and the
existing telephone system. One or more Gateways are typically installed in the
telephone equipment room. Each Gateway supports up to 16 telephone lines and
Wireless Telephones. Up to 40 Gateways can be connected to the LAN to support
additional telephone lines. If five or more Gateways are connected to the LAN, a
AVPP must be installed to handle the increased call volume.
Avaya digital gateways work with the digital ports on most common brands of
telephone systems (PBX or key systems), and analog gateways work with telephone
systems (CO, PBX, or key systems) with analog (loop start) ports. Access Points –
supplied by third party vendors, access points provide the connection between the
wired Ethernet LAN and the wireless (802.11b) LAN. Access points (AP) must be
positioned in all areas where Wireless Telephones will be used. The number and
placement of access points will affect the coverage area and capacity of the wireless
system. Typically, the requirements for use of Avaya Wireless Telephones are
similar to that of wireless data devices. Contact Avaya, or a certified Avaya
distributor, for specific information about your facility’s needs.
• Ethernet Switch – a component in the wired Ethernet LAN infrastructure. Switches
interconnect multiple network devices, including access points and Gateways.
Ethernet switches are required to provide the higher performance network
connections needed to handle combined voice and data traffic.
• Router – an optional component in the wired Ethernet LAN infrastructure that
separates a wired LAN into segments so that network traffic is restricted to those
segments that are directly involved in the communication. Installation of a network
router is recommended in larger networks, where there may be significant network
traffic not related to the wireless LAN. A router will isolate the wireless LAN from
the associated wired LAN so that they are not impacted by each others’ traffic. The
Gateways, the APs, and their associated Ethernet switch must all be on the same
“side” of the router. This is also true for the AVPP.
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• Avaya Voice Priority Processor – the AVPP manages call network traffic. It is a
required component to utilize the 11Mb/s maximum transmission speed available in
the Avaya Wireless Telephone. It is required in any system when five or more
Gateways are connected to the LAN. With 40 Gateways cabled together, the AVPP
supports a maximum of 640 telephone lines and 120 simultaneous Wireless
Telephone calls.
The Avaya Voice Priority Processor utilizes SpectraLink Voice Priority (SVP) as the
Quality of Service (QoS) mechanism that is implemented in the Wireless Telephone
and AP to enhance voice quality over the wireless network. SVP gives preference to
voice packets over data packets on the wireless medium, increasing the probability
that all voice packets are transmitted efficiently and with minimum or no delay. SVP
is fully compliant with the IEEE 802.11 and 802.11b standards. The AVPP must be
on the same subnet as the Gateways and Wireless Telephones.
• Administrative computer – Required for setup and maintenance of the Gateway and
the AVPP. This computer may be temporarily connected directly to the component or
to the network, a dedicated computer is not required. Some installations use a laptop
to configure and maintain system components.
• TFTP Server – Required in an IP system to distribute software to the Wireless
Telephones and AVPP. May be on a different subnet than the IP gateway, IP
telephony server, and APs.
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2.6 The Front Panel of the Avaya Voice Priority
Processor
The Avaya Voice Priority Processor’s front panel contains ports to connect to power, the
LAN, and an administrative computer via an RS-232 port. Status LEDs supply
information about the Avaya Voice Priority Processor’s functioning.
RS-232 Port – male DB-9 connector (DTE) used for RS-232 connection to a terminal,
terminal emulator, or modem for system administration.
Link LEDs –
LNKOK – lit when there is a network connection.
ACT – lit if there is system activity.
COL – lit if there are network collisions.
NETWORK – connects to wired (Ethernet) LAN.
ERROR LED – lit when the system has detected an error.
STATUS LEDs – indicate system error messages and status.
1– heartbeat, indicates gateway is running.
2– if active calls.
3, 4,5 – currently unused
PWR (power jack) – connects to the AC adapter supplying power to the system.
Use only the Avaya-provided Class II AC Adapter with output 24VDC, 1A.
AVAYA
L
N
K
O
K
A
C
T
C
O
L
Status
E
R
R
O
R
3 4 51 2 PWR
NETWORK
RS-232
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3. Installing the Avaya Voice Priority
Processor
As shown in the system diagram the AVPP is connected to the Ethernet switch. The
specifications covered here allow for great flexibility in physical placement of the
components within stated guidelines.
See the Setup and Administration document for your vendor’s IP system for information
on LAN requirements, network infrastructure and IP addressing.
3.1 Required Materials
The following equipment must be provided by the customer.
 Power Outlet – must accept Avaya-provided AC adapter.
 Backboard space – the AVPP is designed to be wall mounted to ¾” plywood
securely screwed to the wall.
 Screws – required to mount the AVPP to the wall. Four #8 - ¾” panhead wood
screws (or similar device) are required.
 Cat. 5 Cable – RJ-45 connector at the AVPP. Connection to Ethernet switch.
3.2 Locate the Avaya Voice Priority Processor
The AVPP measures approximately 4 x 12.5 x 7 inches, and weighs about five pounds.
The unit can be wall mounted, vertically or horizontally, over ¾” plywood. The AVPP
can also be rack mounted using a rack mount kit (sold separately).
Locate the AVPP in a space with:
• Sufficient backboard mounting space (for wall mount) and proximity to the LAN
access device (switched Ethernet hub) and power source.
• Easy access to the front panel, which is used for cabling.
• A maximum distance of 325 feet (100 meters) from the Ethernet switch.
3.3 Install the Avaya Voice Priority Processor
Rack Mounting the Avaya Voice Priority Processor
The rack mount kit is designed for mounting equipment in a standard 19 inch rack and
should contain the following equipment:
Mounting plates – two for each AVPP to be mounted.
Screws – four rack mount screws for each AVPP to be mounted.
To rack mount the AVPP:
1. Remove the corner screws from the AVPP
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2. Screw the U-shaped end (round screw holes) of the two mounting plates to the
AVPP.
3. Screw the other end of the two mounting plates (oblong screw holes) to the rack.
4. Repeat steps 1-3 for each additional AVPP. The mounting plate is designed to
provide the correct minimum spacing between units. When mounting multiple
units, stack the units in the rack as closely as possible.
Mount the Avaya Voice Priority Processor to Wall
The AVPP can be mounted either horizontally or vertically.
To mount the AVPP:
1. Using a 1/8 inch drill bit, drill four pilot holes, on 1.84 by 12.1 inch centers
(approximately equivalent to 1-13/16 inch by 12-1/8 inch).
2. Insert the #8 x 3/4 inch screws in the pilot holes and tighten, leaving a 1/8 to 1/4
inch gap from the wall.
Connect Avaya Voice Priority Processor to LAN
1. Using a Cat. 5 cable, connect the NETWORK port on the AVPP to the connecting
port on the Ethernet switch.
Connect Power
2. Connect the power plug from the AC adapter to the jack labeled PWR on the
AVPP.
Use only the provided Class II AC Adapter with output 24VDC, 1A.
3. Plug the AC adapter into a 110VAC outlet to apply power to the AVPP.
4. The system will cycle through diagnostic testing and the LEDs will blink for
about one minute. When the system is ready for use:
• The ERROR LED should be off.
• Status 1 should be blinking.
After the AVPP is installed, you must configure the Avaya Wireless Telephones. For
Wireless Telephone configuration, see the Setup and Administration document for your
vendor’s IP system.
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4. Configuring the Avaya Voice Priority
Processor
During initial setup of the AVPP the IP address is established and the maximum number
of active calls per access point is set. Optionally, you may enter a hostname and a
location for software updates via TFTP.
4.1 Connecting to the Avaya Voice Priority Processor
The initial connection to the AVPP must be made via a serial connection to establish the
Avaya Voice Priority Processor’s IP address. After the IP address is established,
connection to the AVPP may be done via the network using Telnet. It is recommended
that the basic setup actions occur while the serial connection is made.
Connect via the Serial Port
1. Using a DB-9 female, null-modem cable, connect the AVPP to the serial port of a
terminal or PC.
2. Run a terminal emulation program (such as HyperTerminal™) or use a VT-100
terminal with the following configuration:
Bits per second: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None
3. Press Enter to display the AVPP login screen.
4. Enter the default login: admin and default password: admin. These are case
sensitive.
5. The
NetLink SVP-II System menu will display.
Connecting Via Telnet
Telnet can only be used after the Avaya Voice Priority Processor’s
IP address is configured.
The Telnet method of connection is used for routine maintenance of the Avaya Server for
both local and remote administration, depending on your network.
To connect via Telnet, run a Telnet session to the IP address of the AVPP. Once you
connect and log in, the NetLink SVP-II System menu displays.
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4.2 The NetLink SVP-II System Menu
The main menu displays as shown here:
System Status – menu for viewing error messages, status of operation and software
code version.
SVP-II Configuration – allows you to set the mode and reset the system.
Network Configuration – allows you to set network configuration options, including IP
address and hostname.
Change Password – allows you to change the password for AVPP access.
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4.3 Network Configuration
The IP address and other network settings are established via the Network
Configuration screen. This is also where you may, optionally, establish a hostname and
enter the IP address of the location of any software updates you may obtain from Avaya.
See section 5, the Software Maintenance section, of this document for more information
about installing software updates via TFTP.
Scroll to Network Configuration and select by pressing Enter. A screen similar to the
following appears:
• IP Address – enter the IP address of the AVPP, defined by your network
administrator. Enter the complete address including digits and periods. DHCP
may be entered.
• Hostname -(optional) change the default host name, if desired. This is the
name of the AVPP to which you are connected, for identification purposes
only. You cannot enter spaces in this field.
• SVP-II TFTP Download Master –this entry indicates the source of software
updates for the AVPP. See section 5, the Software Maintenance section, for
more information.Valid source location entries are:
 NONE – disables.
 IP Address – the IP address of a network TFTP server that will be used to
transfer software updates to the AVPP.
• DNS server and DNS domain – These settings are used to configure Domain
Name services. Consult your system administrator for the correct settings.
These can also be set to DHCP. This will cause the DHCP client in the AVPP
to attempt to automatically get the correct setting from the DHCP server. The
DHCP setting is only valid when the IP address is also acquired using DHCP.
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