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Do I have enough bandwidth for TeleSouthCentrex?
 
 
Below is the average bandwidth available based on the most popular delivery methods. Remember bandwidth used for data transmissions will have an effect on the number of concurrent calls supported. However, these numbers can be used for estimating if a customer possesses enough bandwidth to support TeleSouthCentrex. A bandwidth testing tool should be used to gauge the true amount of bandwidth each organization has, but for rough estimates, these numbers will work. TeleSouthCentrex requires approximately 20Kb/s of free upload bandwidth per concurrent call .

 
 
 
Download Kb/s
Upload Kb/s
Number of concurrent calls
Cable
1700
350
14

DSL

1150
500
20

T1

1500
1500
63
 
     
 
For getting an accurate view of your company's available bandwidth, run the test at the following website to see your actual internet connection speed.
 
     
   
     
 

Upload speed is what is important with TeleSouthCentrex. If you do not have enough upload bandwidth to support the number of concurrent calls you would like, you will need to upgrade your connection or add another one.

Is my network ready for TeleSouthCentrex?

If you will need more than 2 phones in a location, there may be the need for a Quality of Service (QoS) Router onsite. If your current switch/router supports QoS, make sure that this feature is enabled. In some cases a firmware upgrade may be necessary to enable QoS support. Check your switch/router manufacturer's website to see if this is available. QoS prioritizes voice packets over data packets so in times of high network traffic, the voice quality is not affected. If you do not possess a QoS capable switch/router, then you may need to purchase one.

For organizations with 15 or more users , TeleSouth recommends that the customer possess a router(such as the Cisco 2611)that supports QoS/Priority Queuing, as well as a managed switch that supports VLAN and 802.1q trunking(such as the HP Procurve 2600 Series) so that the phones can be on their own VLAN and have their voice traffic prioritized over the normal data traffic on their internal network. Without a QoS device on your network, voice traffic may become choppy at times. Some networks with fewer users may also require a router capable of QoS. The Linksys BEFSR81 is a possible solution to perform QoS for smaller networks. What QoS device, if any, that needs to be used, is all dependent on individual network traffic.

 
     

 
 

Is my Internet Connection reliable enough to support TeleSouthCentrex?

 

Go to the Command Prompt from any computer on your network and type the following command:

ping sd1.TeleSouth.com

The results will give you numbers for Minimum, Maximum, and Average Latency.
If the number for Average is 50ms or less, then you are good to go.

If latency is greater than 50ms, then you may need to switch broadband providers before you can reliably use TeleSouthCentrex.

 
Here are a list of broadband providers that test well with TeleSouthCentrex:
 
AT&T
Cogent
El Paso Global
Voicemail
Internap
Level 3
MFN
OnFiber
Qwest
SWBT
Time Warner
TXU
Verio
Williams
Worldcom
XO
Yipes!
   
Approved Routers for TeleSouthCentrex service:
   
Linksys WRT54G
Linksys BEFSR81
Cisco 2611
Linux IPTABLES-based routers
   
Routers with known issues:
   
Netgear FVS-318 (Does not work with Cisco phones)
   
What do I need to know before I can quote a TeleSouthCentrex solution?
   
1 Number of expected phones needed
2 Estimated monthly outbound phone usage by each person needing a phone
   
 

 

Copyright © 2005 TeleSouth Network, Inc.
Last Update on
March 26, 2005 by TeleSouth Web Design