Netlink Blog

Fluke Networks is running a limited time special promotion on select models of the DTX Compact OTDR.  When you purchase one of three available models, you can receive a free Fluke Networks DTX Series Network Service Module. 

Ann
www.netlinkweb.com
RSS: http://feeds.feedburner.com/NetLinkBlog/

NetLink is now an authorized reseller of Tripp-Lite products.  If power protection is on your mind, Tripp-Lite has an award winning product line to guard against some of the most common power problems:

1. Power Surge/Spike
2. Overvoltage/Undervoltage
3. Noise
4. Brownout
5. Blackout

Tripp-Lite's line of power strips, surge protectors, line conditioners, uninterruptible power supplies (UPS), network server and storage enclosures, and power management software can help guard against these problems; all at very competitive prices too.

Harry
www.netlinkweb.com
RSS: http://feeds.feedburner.com/NetLinkBlog/

One of the best selling units around is the ADTRAN T1 CSU ACE.  The CSU is used for interfacing DTE equipment (in most cases, a PBX) T1 trunk line to a Telco provided T1 line. 

The latest model is the 3rd generation 1203022L1.  This unit comes in a white case and has a blue front face plate as shown in the picture above.  It has the look of the ADTRAN NetVanta line of products.

What some people may not know is that there are two other CSU units that have identical application features and that can be substituted for the 3rd generation model.  These include the first generation 1200022L2 and the second generation 1202022L1 models.

They have a smaller beige case, bantam jacks, RJ48C (8 pin modular) CPE and NET Sockets, along with a dip switch for Net and Line LBO. 

So you have plenty of good product choices when you're looking to incorporate an ADTRAN CSU ACE into your network.

Harry
www.netlinkweb.com
RSS: http://feeds.feedburner.com/NetLinkBlog/

Here's some cool new stuff from the latest training about ADTRAN's software release of AOS 17.1.1.

1. Port Lists allow you to create users with restricted access modes to only specified services.
2. Flash Provisioning enables you to auto update the configuration or software via CompactFlash - supported on NetVanta 1335, 3430 and 3448.
3. Top Talkers is supported on NetVanta 340, 344, 1335, 3120, 3130, 3305, 3430, 3448, 4305 and 5305.
4. VoIP Quality Monitoring - Passive call quality using MOS, delay, jitter, packet loss and discarded packets.  Historical, realtime and event logging by threshold.  The Enhanced feature pack is required to run VQM -- Supported on NetVanta 1355 -25 Calls,  31xx - 10 Calls,  34xx - 50 Calls , 4304 - 75 Calls and 5305 - 100 Calls

Harry
www.netlinkweb.com
RSS: http://feeds.feedburner.com/NetLinkBlog/

Choosing a RAD Airmux 200 System is easy. 

1. First, choose the Indoor Unit (RAD IDU) according to the voltage requirement (115 or 230 VAC) and the number of T1/E1 ports needed in addition to the UTP.
2. Next, choose the Outdoor Unit (RAD ODU) according to the frequency you want (2.4, 4.9, 5.3 or 5.8GHz) and either an integrated antenna or an external/connectorized (EXT) antenna.  Choose the high power version of the ODU if enhanced range is needed.
3. Finally, an indoor outdoor UTP cable (AIRMUX-CBL-UTP) is needed and will be dependent on the distance from the IDU to the ODU (25, 50 or 75 meters). 

If you choose the connector version of the ODU for use with external antenna, you will have to choose an antenna size and frequency to match your application as well as a low loss antenna cable with adequate length for the distance between the ODU and the antenna.

Told you it was easy.  Drop me a comment if you have questions.

Harry
www.netlinkweb.com
RSS: http://feeds.feedburner.com/NetLinkBlog/

And I use the word 'geeks', in the nicest, most respectful way possible.

NetLink Technologies and ADTRAN invite you to switch your switch.  When you switch to any NetVanta switch or switch-router. now through June 30, 2008, you'll receive an entry into a drawing for one of 5 Wii Combo Packages valued at nearly $600 each!

Update: This promotion has been modified. Please see the new terms and conditions.  Wii have the details.

Solutions for Managed Fast Ethernet, Power over Ethernet and Gigabit switching are easily met with the ADTRAN NetVanta 1000 series.  These switches are fully featured and offer an integrated switch-router, VLAN Switching, Inter VLAN Routing, VPN, Firewall and QoS.  PoE 802.3af enabled NetVanta 1000 series switches utilzing QoS are a perfect fit for VoIP applications.  Standards based AOS allows for ease of use and includes free firmware updates for reduced TCO and future proofing.

Interested?  Wii have the details.

Ann
www.netlinkweb.com
RSS: http://feeds.feedburner.com/NetLinkBlog/

When looking at Wireless solutions, you are bound to come across the term OFDM (Orthogonal Frequency Division Multiplexing).  What is it, and why do I want it? 

This is a digital modulation scheme that uses multiple sub-channels to transmit the data.  The sub channels typically overlap in the frequency range, but do not interfere with one another.  Each of these sub channels use conventional modulation schemes such as BPSK, QPSK and QAM.

OFDM is now commonly used for digital television, audio broadcasting and wireless networking.  Using the slowly modulated multiple sub channels has a distinct advantage in dealing with interference and multipath fading. 

Compared to single channel modulation schemes, OFDM created guard intervals in the multiple sub channels between symbols, makes for better data integrity.

If you're planning a wireless network, look for the OFDM radios such as the ones we carry - Motorola Canopy, Alvarion, RAD, Colubris, Proxim and SkyPilot.  Or drop a comment to me if you have any questions.

Harry
www.netlinkweb.com
RSS: http://feeds.feedburner.com/NetLinkBlog/

If you've been looking for an economical wireless 11Mbps point-to-multipoint solution that's perfect for campus and last mile access - the Proxim Tsunami MP.11 can end your search.

Tsunami MP.11 consists of a Base Station Unit (5054-BSUR-US), your choice of directional or omni antenna and low cost Subscriber Modules (5054-SUR-US) - and can effectively compete against ADSL and Cable Modem offerings while doing away with recurring monthly access costs.

This easy to deploy system is also ideal for security and surveillance.  Digital cameras can simply be connected to the Tsunami MP.11 Subscriber Modules and transmit high resolution video back to the Base Station Unit in real time.

Other sorta cool applications for the MP.11 include:

• Emergency First Responders
• Campus Connectivity
• Mobile Hot Spot
• Security
• Last Mile Access
• Metro Area Networks

Starter Kits (5054-K00-US) are also available with a BSU; quantity of 10, SURs, a 60 degree directional antenna plus a jumper cable at a great price. 

Give NetLink a call - or comment me back on the BLOG if you have any questions - or you can also check the NetLink Solutions page.

Harry
www.netlinkweb.com
RSS: http://feeds.feedburner.com/NetLinkBlog/

Just noticed that Radwire released 1.750 which includes the new RadWire ODU-HE Series (2.4-2.7GHz + 4.9-5.9GHz) radios....hey, I'm an SE - so I notice these things.

Hub Site Synchronization is now available by using the new HSSU-10 unit for multi-point-to-point applications.

The HSSU enables up to 16 colocated ODU-HE radios to transmit at the same time eliminating the problem with TDD interference, which I think you'll agree, can be a MAJOR PROBLEM with non-synchronized, colocated radios.  The ODUs have a higher Tx power (up to 23/27 dBm) for up to 100% maximum range improvement.

The new IDU-R enables automatic failed primary to back-up of critical wire line or wireless E1/T1 lines.  The wireless link can be defined as primary or backup link.  The IDU-R works with all Airmux Outdoor Units. 

New features such as licensed FCC BRS (2.5-2.7GHz) support -

• VLAN tagged management
• Configurable delay
• Telnet support
• Larger DC range for IDU (-20 to -60 VDC and
• New PoE-10 which can feed up to 10 ODUs

Drop me a comment or give NetLink a call if you have any questions on this new rev.

Harry
Web - www.netlinkweb.com
RSS - http://feeds.feedburner.com/NetLinkBlog/

That is...not the kind you see on TV, although I do hope you caught the game last Sunday.  I'm talking about interference from 802.11a frequencies...if you've been having problems, here's a good way to resolve it.

Motorola Canopy OFDM point-to-point backhaul radios (30M/60M or 150M/300M) use different encoding methods than 802.11a systems, so if you're operating in an area where 802.11a signals are present, the Motorola Canopy backhaul systems automatically choose a clear channel and steer you away from any interference.

Less interference is good - even when we're not talking Superbowl. 

Send me a comment or give NetLink a call if you have any questions. We're an authorized and certified broadband wireless reseller (formerly ACSP) for all Motorola Canopy wireless solutions.

Brian
Web - www.netlinkweb.com
RSS - http://feeds.feedburner.com/NetLinkBlog/