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I am fairly certain that I have PVDM2-48 48 channel packet voice/fax DSP module installed in my 2811 router. &nbsp;&quot;show hardware&quot; does not indicate its presence. &nbsp;But in another router I am clearly using DSP resources for conference calling. &nbsp;What Cisco IOS &quot;show&quot; command indicates the presence of this DSP module? &nbsp;Thanks.<br />
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<pre><code id="code-365128">Sample output of show hardware: 
Cisco 2811 (revision 53.51) with 245760K/16384K bytes of memory.
Processor board ID FTX101010101011
2 FastEthernet interfaces
1 Gigabit Ethernet interface
1 Serial interface
2 terminal lines
2 Channelized T1/PRI ports
1 cisco service engine(s)
DRAM configuration is 64 bits wide with parity enabled.
239K bytes of non-volatile configuration memory.
126976K bytes of ATA CompactFlash (Read/Write)
</code></pre>
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I am fairly certain that I have PVDM2-48 48 channel packet voice/fax DSP module installed in my 2811 router.  "show hardware" does not indicate its presence.  But in another router I am clearly using DSP resources for conference calling.  What Cisco IOS "show" command indicates the presence of this DSP module?  Thanks.



How to determine if DSPs installed in 2811?

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.