[cisco-voip] Is there a way to shutdown make one of VIC2-FXS ports out of service to free DSP resources?

[Nate VanMaren]

from
http://www.cisco.com/en/US/products/hw/routers/ps221/products_tech_note09186a00800c3399.shtml


At router boot time, DSP resources are allocated to VICs and VWICs in this manner:

1.      DSP resources are pre-allocated to analog VICs according to the setting for MC or HC codec operation of each VIC.

A single DSP that is set for FixMC operation can support four analog voice ports or two VICs. A single DSP that is set for FixHC operation can support two analog voice ports or one VIC.

2.      DSP resources are allocated for digital BRI VICs.

If there is an odd number of analog VICs on the voice router, all of which are set for MC codec operation, a BRI VIC has one of its voice ports serviced by one of the DSPs that is set for FixMC. The other BRI voice port uses a different DSP that is set for Flexi-6 operation. If the analog VICs are set for HC and MC codec operation in such a way that there is no DSP in either FixHC or FixMC mode that can support a BRI voice port, both ports of the BRI VIC are supported by a DSP that operates in Flexi-6 mode.

3.      Once analog and digital BRI voice ports are accounted for, DSP resources are allocated for digital T1/E1 voice calls with the use of Flexi-6 DSP firmware
The way I understand this, is the only way to free up DSPs used by un-used analog voice ports is to remove the card from the router.

-Nate

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of jeremy co
Sent: Tuesday, April 20, 2010 7:51 AM
To: cisco-voip at puck.nether.net; ccie_voice at onlinestudylist.com
Subject: [cisco-voip] Is there a way to shutdown make one of VIC2-FXS ports out of service to free DSP resources?

Hi,


my router is short on DSP resources, I want to free DSP resources by makeing one of two FXS ports out of service.  However, when I shut down one port, it will say that both ports are out of service,




Cheers,


Jeremy


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