suddenly encountered error %FLEXDSPRM-5-OUT_OF_RESOURCES: No dsps found either locally or globally in incoming calls.

[ccg-collab1]

Hi All,

Good Day. We encountered an issue wherein incoming and outgoing calls are not working. Performed a debug to check the reason of the unsuccessful calls and we found an error %FLEXDSPRM-5-OUT_OF_RESOURCES: No dsps found either locally or globally. Kindly see the detailed debug output below.

024012: Apr 11 02:40:02.091: ISDN Se0/0/0:15 Q931: RX <- SETUP pd = 8 callref = 0x0001
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA18389
Preferred, Channel 9
Calling Party Number i = 0x2183, '09178437544'
Plan:ISDN, Type:National
Called Party Number i = 0xC1, '0700'
Plan:ISDN, Type:Subscriber(local)
024013: Apr 11 02:40:02.103: %FLEXDSPRM-5-OUT_OF_RESOURCES: No dsps found either locally or globally.
024014: Apr 11 02:40:02.107: ISDN Se0/0/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x8001
Cause i = 0x80A9 - Temporary failure
024015: Apr 11 02:40:40.335: ISDN Se0/0/0:15 Q931: RX <- SETUP pd = 8 callref = 0x0001
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA18389
Preferred, Channel 9
Calling Party Number i = 0x2183, '09178437544'
Plan:ISDN, Type:National
Called Party Number i = 0xC1, '0700'
Plan:ISDN, Type:Subscriber(local)
024016: Apr 11 02:40:40.339: %FLEXDSPRM-5-OUT_OF_RESOURCES: No dsps found either locally or globally.
024017: Apr 11 02:40:40.343: ISDN Se0/0/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x8001
Cause i = 0x80A9 - Temporary failure
SGS_ALABANG_VG#
024018: Apr 11 02:41:09.859: ISDN Se0/0/0:15 Q931: RX <- SETUP pd = 8 callref = 0x0001
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA18389
Preferred, Channel 9
Calling Party Number i = 0x2183, '09178437544'
Plan:ISDN, Type:National
Called Party Number i = 0xC1, '0744'
Plan:ISDN, Type:Subscriber(local)
024019: Apr 11 02:41:09.879: %FLEXDSPRM-5-OUT_OF_RESOURCES: No dsps found either locally or globally.
024020: Apr 11 02:41:09.891: ISDN Se0/0/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x8001
Cause i = 0x80A9 - Temporary failure

To immediately restore the operation, we tried to reboot the voice gateway and after the reboot, all calls are now working. I posted this issue or error to check/verify what really happened to the Voice Gateway so that we can prevent or permanently solve the issue. Kindly see attached file for the configuration of the voice gateway. Appreciate your help. 

Thank you,

Kier

[HARIS_HUSSAIN]

You have oversubscribed the DSP Resources.

You have 2 PVDM2-32  and enabled 30 Channel PRI, 8 High Complexity Transcoding and 2 High Complexity Conferencing.

Most probably you were out of DSP resources at that time.

Use below DSP Calculator to analyize. 

http://www.cisco.com/web/applicat/dsprecal/dsp_calc.html

http://www.cisco.com/web/applicat/dsprecal/help.html

You can remove high complexity codes and reduce trancoding  and conferencing sessions

http://www.cisco.com/web/applicat/dsprecal/help.html#_Codec_Categories

Please rate and mark correct if applicable <<<<<<<<

Thanks

Haris

[HARIS_HUSSAIN]

Below is output from DSP Calculator as per your configuration

Router: 2921

IOS: 15.1(4)M

DSP Modules Required:
	PVDM3-128: 1

DSP Module Allocation:
Router Slot 0:		74 Voice (58%) 54 Available (42%)
	PVDM Slot 0/0: PVDM3-128

Call Volume Allocation:
Router Slot 0		Low	Med	High
	Slot 0/0: VWIC3-1MFT-T1/E1(E1)		30

Transcoding High Comp: 8
Conference 8 Party G.729: 2

Thanks

Haris

[Manish Gogna]

Hi Kier,

Please check if you are running one of the fixed versions of the following bug

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCun20989/?referring_site=bugquickviewredir

HTH

Manish