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•Blackouts (when power goes out or when power comes back on)
Some power bars and most Universal Power Supplies contain built-in surge suppressors.
•Alternatively, some users may wish to provide a uninterruptible power supply (UPS) for their modem and DVG (LAN) in these scenarios to keep the VoIP service active.
Given the relatively high cost of UPS per hour of backup, it is unreasonable to provide such backup for more than a few hours. Providing UPS capability for 24 hours or more becomes prohibitively expensive.
It is recommended to spend no more than $50-$120cdn on a small UPS (from APC or Belkin) for your ISP and VoIP service. This should give you "standby" power for a day or so and "talk" time of perhaps 8-10 hours or less; depending on the actual devices, configuration, and usage.
You can estimate your UPS requirements as follows:
• Get the INPUT current (AMPS), or INPUT Wattage, required for each device from the CSA or FCC stickers on the power supply for each device.
•Add the POWER for all devices to get the TOTAL WATTS that you need.
The TOTAL WATTS is what is required to keep your devices powered for each hour of operation. You can estimate how long a UPS will provide power by dividing the UPS "VA" value by your TOTAL WATTS. This results in the approximate number of hours the UPS will provide power to your devices. [ VA is like WATT (V=Volt * A=Amp)]
This is a simplified explanation and will be updated to include transformer heat loss. Note that this provides ratings for TALK time (when the devices are in use). If the TBB phone line is not being used, the calculated time will be higher.
You can also refer to »www.apc.com/tools/ups_selector/index.cfm
Using a Siemens 6300 DSL/wireless router modem at 20W, and the DLINK DVG 1120M which is rated at 22Watts: [ The TOTAL POWER = 20W + 22W = 42 Watts ]
Thus, a total power supply of about 42 Watts is required to keep just the modem and DVG ATA powered up. Using a UPS rated at 600VA and dividing this by 42 Watts provides a result of about 10+/- hours when takihng into account heat loss in the transformer and UPS.
The problem with UPS is that they require PC to retain configuration.. Most UPS will just shutdown unless they are connected to a PC telling them to "Hold on" until batery drain.
Only the Primary TBB number from each line will be designated as the outbound number.
Line one: 416-555-0123 - in/out displays this Primary TBB#
ALT#1: 780-555-0123 - in only
ALT#2: 604-555-0123 - in only
Line two: 604-555-6789 - in/out displays this Primary TBB#
ALT#1: 780-555-6789 - in only
ALT#2: 416-555-6789 - in only
You can also choose to have a second TBB Primary number (not an ALT#) subscribed to on a second DVG ATA, instead of the same unit.
Regardless of the number of DVGs, you should ensure there is sufficient BROADBAND Bandwidth to handle the number of Primary TBB lines you want. For example, 2 Primary TBB lines will require about 160kbs in each direction, for high quality voice using the g711 codec.
Call Primus Customer Service to add a second Primary line to your existing DVG ATA, or a new DVG ATA altogether; and to determine the cost.
The ATA can be connected (via the WAN port) to your ISP (Internet connection) with the following LAN configurations:
•Directly to the MODEM in BRIDGE MODE (when you have multiple IP addresses and are using the D-Link DVG-1120M ATA).
•Connected to a router (LAN) which is connected to the MODEM.
NOTE: There are issues when the ATA is behind certain routers.
•When your computer is connected to the ATA's Ethernet port, directly or via a LAN (router), you should be able to Login to the ATA flawlessly.
NOTE: In some cases, your email may not be accessible until some settings are changed, as described in Email does not work when using DVG ATA.
•However, if your computer is connected via a LAN (router) to the ATA's WAN port, you will only be able to Access the ATA from the WAN by modifying some settings; you need to temporarily connect to the Ethernet port to do this.
However, should you choose to connect your gateway to a wireless network, you should remember that the reliability and quality of the VoIP connection is dependent on the reliability of your wireless network. Should it go down for any reason, you will lose the connection between your gateway and the Primus VoIP server. At this point, any calls coming in to your TBB number will be routed according to the backup configuration you have set in the MyTBB portal. Wireless networks can also impact latency, jitter, and packet loss, resulting in a degradation of call quality.
If you are using a 2.4Ghz cordless phone with this wireless network setup, it is very possible that your telephone will interfere with your network resulting in severe reliability issues. Even if your cordless phone is 900Mhz or 5.8Ghz, other electronic devices in your home may interfere with your network (e.g., microwaves, radios, etc.).
Another DSLReports user has contributed a FAQ of sorts on using VoIP wirelessly. Please note the disclaimers listed in that FAQ.
•Remove the ethernet and telephone cables from the back of the ATA
•Unplug the ATA from the wall (not from the back of the ATA--I got sparks doing it that way)
I had the bad luck of needing a new ATA sent out after moving it. Although it's hard to know why it stopped working, the above procedure should avoid the most likely causes (i.e. electrical spike due to lack of grounding, or data being written to the unit at the moment of powering it down).
This can be resolved simply by power-cycling the ATA after all upstream devices have been powered up. The ATA's WAN port may be connected via an ethernet cable to the upstream device(s) either before or after the upstream device(s) are powered on.
The "hang" condition can occur when the power is cycled on all devices simultaneously as during "brown-outs", "black-outs", or with a switch, especially if all devices are plugged into the same power bar.
•You can avoid this on manual powerups by doing the following (depending on your particular configuration):
- First powering up Modem and waiting for an appropriate time for it to sync with the network
- Powering up the ATA
- Then powering up the Router
•Under Power Outage conditions, the ATA may come up in a "hang" state with no DIAL TONE, and be OOS. In this scenario, you will have to manually reset the devices as suggested above.
port 2427 - 2427 udp/tcp
port 16384 - 32767 udp only
The DVG ATA itself has a built-in firewall (as do the Linksys ATA models). However, for TBB service, regardless of how you connect the ATA to a broadband ISP, you normally should not have to configure any port forwarding settings either on the ATA or on the upstream router/gateway/firewall device/computer.
Note that when the ATA is connected to certain routers, there are some circumstances where the ATA needs to have port forwarding enabled or be placed in a DMZ to resolve port timeout issues with these routers (e.g., Linksys BEFSR41).
The reason that port forwarding is not needed is that the ATA initiates communication with the Primus TBB servers (upon powerup - see The Firmware Upgrade Process) and keeps this connection open for all transactions--whether outgoing or incoming calls.
[This will require 2 IP addresses unless you use a router between the modem and hub (switch), OR your modem has LAN DHCP capability such as some cablemodems]
•Connect the ATA WAN port to one port on the hub (switch).
•Do not connect anything to (the ethernet port on) the ATA.
•Connect your LAN (other components) through *one* of the other ports on the hub (switch).
•Do not connect anything to the other hub (switch) ports.