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Difference between wic-1dsu-T1 and vwic cards.

sarahr202
Level 5
Level 5

Hi everybody

I am just rying to understand the difference between vwic and wic -1tdsu-t1 cards.

WIC-1DSU-T1-V2

The above card can only be used for unchannelized t1 connectivity?

Or can we also use this card to pstn for channelized T1 connectivity?

On the other hand if we have vwic, we can use it as

(WIC-1DSU-T1 for data connectivity or we can also use it as vwic to connect to pstn over a channelized t1.

Am i correct?

Thanks and have a great day.

1 Accepted Solution

Accepted Solutions

Reza Sharifi
Hall of Fame
Hall of Fame

Hi Sarah,

The above card can only be used for unchannelized t1 connectivity?

Correct, data only and no PSTN (voice)

On the other hand if we have vwic, we can use it as

(WIC-1DSU-T1 for data connectivity

(WIC-1DSU-T1 is data only

or we can also use it as vwic to connect to pstn over a channelized t1.

You can use a vwic for both data and voice but not connecting to PSTN and some other restriction.

Here is some info from a vwic data sheet:

Note: The 1-port and 2-port T1 Multi-Flex Trunk VWICs are not like the T1           channel service unit/data service unit (CSU/DSU) (WIC-1DSU-T1). The T1           Multi-Flex Trunk VWICs are can transmit either voice and data or both based on           the network module they are installed in and whether Digital Signal Processors           (DSPs) exist on the module.

This Multi-Flex Trunk can be used as a Voice Interface Card when       combined with appropriate accompanying hardware (such as an NM-HDV, NM-HDV2, an       NM-HD-2VE, or an AIM-VOICE-30 and AIM-ATM-VOICE-30 card), or as a WIC (in a WIC       slot in the 2600 or 3600). Therefore, it is a Voice WAN Interface Card (VWIC).

The Multi-Flex Trunk provides physical layer T1 access. The       capabilities of that T1 interface are determined by the host it is plugged       into.

This Multi-Flex Trunk card does not support ISDN data or modem       termination in a traditional Network Access Server (NAS) dial scenario. Under       specific scenarios, ISDN data and modem connectivity can be possible when the       VWIC is used for packet voice, such as in the case of Modem Pass-through and       Modem Relay to a peer voice gateway. Such features are beyond the scope of this       document.

and here is the data sheet for vwic:

http://www.cisco.com/en/US/products/hw/routers/ps274/products_tech_note09186a00800f9d37.shtml

HTH

Reza

View solution in original post

1 Reply 1

Reza Sharifi
Hall of Fame
Hall of Fame

Hi Sarah,

The above card can only be used for unchannelized t1 connectivity?

Correct, data only and no PSTN (voice)

On the other hand if we have vwic, we can use it as

(WIC-1DSU-T1 for data connectivity

(WIC-1DSU-T1 is data only

or we can also use it as vwic to connect to pstn over a channelized t1.

You can use a vwic for both data and voice but not connecting to PSTN and some other restriction.

Here is some info from a vwic data sheet:

Note: The 1-port and 2-port T1 Multi-Flex Trunk VWICs are not like the T1           channel service unit/data service unit (CSU/DSU) (WIC-1DSU-T1). The T1           Multi-Flex Trunk VWICs are can transmit either voice and data or both based on           the network module they are installed in and whether Digital Signal Processors           (DSPs) exist on the module.

This Multi-Flex Trunk can be used as a Voice Interface Card when       combined with appropriate accompanying hardware (such as an NM-HDV, NM-HDV2, an       NM-HD-2VE, or an AIM-VOICE-30 and AIM-ATM-VOICE-30 card), or as a WIC (in a WIC       slot in the 2600 or 3600). Therefore, it is a Voice WAN Interface Card (VWIC).

The Multi-Flex Trunk provides physical layer T1 access. The       capabilities of that T1 interface are determined by the host it is plugged       into.

This Multi-Flex Trunk card does not support ISDN data or modem       termination in a traditional Network Access Server (NAS) dial scenario. Under       specific scenarios, ISDN data and modem connectivity can be possible when the       VWIC is used for packet voice, such as in the case of Modem Pass-through and       Modem Relay to a peer voice gateway. Such features are beyond the scope of this       document.

and here is the data sheet for vwic:

http://www.cisco.com/en/US/products/hw/routers/ps274/products_tech_note09186a00800f9d37.shtml

HTH

Reza

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