The Cisco AIR-LMC352 is proving hard to find.

The Cisco AIR-LMC352 is proving hard to find.

Cisco End-Of-Lifed the Cisco AIR-LMC352 in January of 2006. Demand for the AIR-LMC352 Aironet 350 Series Client Adapter has been high over the last year. Large quantities of the AIR-LMC352 have been hard to find. You can still find them in small quantities on auctions sites like eBay.

The AIR-PCI352 (PCI card) has what appears to be an AIR-LMC352 included (installed). Many people have wondered if you can simply remove the AIR-LMC352 from the AIR-PCI352. The AIR-PCI352 is much more available and this would be a great solution for those of us looking for large quantities of AIR-LMC352s. The problem however is that although they look the same, they is a small but important difference.

The AIR-LMC352 adapter that is included on the AIR-PCI352 has a modified boot code that only allows it to work on the PCI card. If you attempt to remove that AIR-LMC352 and install it in a standard PCMCIA slot, the system will not recognize it. We have looked for ways to change the boot code (not the same as the flash software) but have not been successful.

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What is a Cisco CISCO3725-DC-U?

What is a Cisco CISCO3725-DC-U?

The Cisco CISCO3725-DC-U is described by Cisco as "3725 router w/Universal Power Supply 24/48 volts 32F/256D". When compared with the CISCO3725 you can quickly see that the only difference appears to be the "Universal Power Supply 24/48 volts". The Flash and Memory are the same as a regular CISCO3725.


So what is this Universal Power Supply 24/48 volts? A quick search on Cisco's website reveals that the part number for this universal power supply is actually: PWR-3725-DC-U


The PWR-3725-DC-U is described as: "Spare Universal Power Supply 24 to 48 volts". The wiring requirements for this power supply are:

A Cisco 3725 router with a DC-input power supply requires copper wire, size AWG 14 (1.625 mm²), for the power connections.

You can connect a single DC power source to either the A input or the B input. If there are parallel dual power sources, connect one source to the A input and one source to the B input; both sources must be the same polarity. A NEBS-compliant chassis ground connection is required with both single source and parallel dual sources

Key Note: The CISCO3725, including the CISCO3725-DC-U have been End-Of-Lifed by Cisco and have been replaced the by the CISCO3825 and CISCO3825-DC respectively.

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What is the default memory on a Cisco AIM-CUE?

What is the default memory on a Cisco AIM-CUE?
The Cisco AIM-CUE is a module that physically integrates into a router chassis and offers industry-leading integrated messaging, voicemail, fax, automated attendant, optional interactive voice response (IVR), and a rich set of other messaging features.

The following routers support the AIM-CUE:
Cisco 2801, Cisco 2800 Series, Cisco 3700 Series, Cisco 3800 Series

The AIM-CUE originally shipped with 256MB of Flash Memory. It began shipping with 512MB Flash (Compact Flash) in March 2004. In December 2004, Cisco increased the default flash memory to 1GByte.

Key Note: Cisco Unity Express 1.1 and later (with voice mail message storage greater than 6 hours) exceeds the 512MB flash capacity and requires 1Gbyte. Customer should be aware of this requirement when purchasing the Cisco AIM-CUE.

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What is the difference? AIM-ATM AIM-ATM-VOICE-30 AIM-ATM-VOICE-30

What is the difference? AIM-ATM AIM-ATM-VOICE-30 AIM-ATM-VOICE-30

The Cisco AIM-ATM, AIM-VOICE-30 and AIM-ATM-VOICE-30 are Voice/Fax and ATM AIM modules designed for the Cisco 2600, 2600XM, 2691, 3660 and 3700 series routers. These routers are equipped with an Advanced Integration Module (AIM) Slot.

AIM-ATM : Provides asynchronous transfer mode (ATM) WAN services.
AIM-VOICE-30 : Provides digital signal processor (DSP) services and can support up to 30 medium-complexity or 16 high-complexity voice channels.
AIM-ATM-VOICE-30 - Combines the features of the AIM-ATM and AIM-VOICE-30 modules onto a single AIM module.

The AIM-ATM offers ATM adaptation layer 2 (AAL2) and ATM adaptation layer 5 (AAL5) support for low-density T1/E1 data and voice connections over ATM networks.

The AIM-VOICE-30 contains DSPs that can support up to 30 voice channels when used with VWIC-MFT interface cards.

The AIM-ATM-VOICE-30 combines the ATM features of the AIM-ATM and voice features of the AIM-VOICE-30 in a single AIM module. The AIM-ATM-VOICE-30 also supports FR/HDLC/PPP ecapsulation and channelized voice on the same T1/E1 interface to PSTN.

Key Note: Before the introduction of the AIM-VOICE-30, providing digital voice service required the NM-HDV and analog voice services required the NM-1V/2V or NM-HDA. The AIM-VOICE-30, when used with a Voice/WAN interface card (VWIC-MFT), can provide digital voice service without using teh NM-HDV. This frees a valuable network module slot for other applications.

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CISCO1751 replaces the award winning CISCO1750.

CISCO1751 replaces the award winning CISCO1750.

The Cisco 1750 has won many awards and has been the preferred router when converging voice and data networks for small businesses. The CISCO1751 expanded on the success of the CISCO1750 and taken the features to the next level. Features such as Voice, require additional available memory that only the CISCO1751 can provide. The CISCO1750 was end-of-lifed by Cisco on February 1, 2002. The replacement router was the CISCO1751. This article looks at both routers and explains the difference between the two.

Both the CISCO1750 and CISCO1751 include the following:
One autosensing 10/100 Fast Ethernet port
1 VIC Slot
2 WIC/VWIC SlotsOne Console Port

The updated and newer CISCO1751 differs in the following:
Routing Performance: +40%
Base Memory (Flash/DRAM): 16MB/32MB (Compared to 4MB/16MB on CISCO1750)
Max Memory (Flash/DRAM): 16MB/96MB (Compared to 16MB/48MB on CISCO1750)
IEEE 802.1Q VLAN Routing: Yes
SPMM (DSP) Slots: 2 (Compared to 1 on CISCO1750)

To summarize, the CISCO1751 offers higher performance, increased memory capacity for voice applications as compared to the CISCO1750.

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What is the difference between the CISCO1720 and the CISCO1721?

The Cisco 1720 modular access router has been a very popular choice for small businesses looking for WAN connectivity, such as ISDN and T1. The CISCO1720 was end-of-lifed by Cisco on August 1, 2003. The replacement router was the CISCO1721. This article looks at both routers and explains the difference between the two.

Both the CISCO1720 and CISCO1721 include the following:
One autosensing 10/100 Fast Ethernet port2 WAN Interface Card slots (WIC)One AUX PortOne Console PortOne Internal expansion slot for VPN encryption card (MOD1700-VPN)

The updated and newer CISCO1721 differs in the following:
Routing Performance: +40%DRAM (Default/Maximum): 32MB/96MB (Compared to 32MB/48MB on CISCO1720)Flash (Default/Maximum): 16MB/16MB (Compared to 8MB/16MB on CISCO1720)IEEE 802.1Q VLAN Routing: YesEncryption Module LED: Yes

To summarize, the CISCO1721 offer higher performance, increased memory capacity and additional functionality as compared to the CISCO1720.

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Cisco CISCO3745 Router Discussion

Cisco CISCO3745 Router Discussion

Manufacturer: Cisco

Model: CISCO3745

The CISCO3745 is a two port 10/100 router with 2 AIM slots, 3 WIC slots and 4 NM slots. The CISCO3745 was a replacement to the CISCO3640. The CISCO3745 has been End Of Lifed and has been replaced by the CISCO3845 Router.

The CISCO3745 is meant for medium to large-sized offices/businesses and has the ability to support data, security, voice and advanced services at wire speeds up to T3/E3 rates.

The CISCO3745 also sports high availability and resiliency utilizing redundant power supplies.

Key features for the CISCO3745:
Two Integrated 10/100 LAN ports
Two Integrated Advanced Integration Modules (AIM) slots
Three Integrated WAN Interface Card (WIC) slots
Four (Cisco 3745) Network Module (NM) slots
Two (Cisco 3745) High Density Service Module (HDSM)-capable slots
32MB Compact Flash (default); 128MB maximum
256MB DRAM (default, single 256MB DIMM); 512MB DRAM maximum
Optional In-Line Power for 16-port EtherSwitch NM and 36-port EtherSwitch HDSM
Support for all major WAN protocols and media: LL, FR, ISDN, X.25, ATM, fractional T1/E1, T1/E1, xDSL, T3/E3, HSSI
Support for selected NMs, WICs and AIMs from the Cisco 1700, 2600 and 3600 Series 2 RU (Cisco 3725) or 3 RU (Cisco 3745) Rack-mountable chassis

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What is a Cisco WIC-1DSU-T1?

What is a Cisco WIC-1DSU-T1?

The Cisco WIC-1DSU-T1 is an integrated network module for T1 or fractional T1 service. Does not require an external CSU/DSU. This WIC is supported on the Cisco 1600, 1700, 2600 and 3600 series routers.

Here are some of the key features of the WIC-1DSU-T1:

-T1 or fractional T1 network interface
-N X 64 kbps or N X 56 kbps, nonchannelized data rates (N = 1 to 24)
-Standards based, including ANSI T1.403 and AT&T Publication 62411
-Full management features

Official Cisco Product Number and Description

WIC-1DSU-T1 - One-port T1/fractional T1 DSU/CSU WAN interface card

Over the last few years counterfeit units coming in from China have hit the market. Buyers should be aware of this issue and learn how to spot a counterfeit WIC-1DSU-T1 before purchasing.

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Cisco WS-C2948G-L3 Layer 3 Switch Remains Popular

Cisco WS-C2948G-L3 Layer 3 Switch Remains Popular

The Cisco Catalyst WS-C2948G-L3 has remained a very popular choice for customer looking for a 48 - Port Layer 3 switch. The switch runs Cisco IOS and is derived from the Cisco Catalyst 8540.

The WS-C2948G-L3 is a 48 Port 10/100Base TX Ethernet Switch with 2 1000BaseX GBIC Gigabit ports. It uses the cat2948g-in-mz Cisco IOS image. Specifications are as follows:

Switching Components
Backplane	20 Gbps full duplex
Microprocessor	150-MHz R5000 RISC
Memory	64 MB of SDRAM, 16 MB of Flash ROM (onboard), 128 KB of NVRAM, 12 MB of synchronous SRAM, 256 bytes serial EEROM
Physical Characteristics
Dimensions (H x W x D)	2.69 x 17.1 x 18 in. (6.6 x 43.4 x 45.7 cm)
Weight	18 lb. (8.08 kg)

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