1760 with 2fxs and 2fxo wont work

smesiatowsky · ‎08-16-2011

I currently have a 1760 with 128M ram and 64m flash running 12.4(15)T14. I have 1 2fxs card and 1 2fxo card. The router will only reconize one card at a time. For example, if the fxs card is in slot 0, it detects the fxs card but not the fxo card. If I swap the card positions and place the fxo in slot 0, then the router will detect the fxo card and not the fxs card. I am assuming it has todo with the fact that there are not enough dsp resources. I just wanted to confirm this before buying more dsp modules. I also cannot tell what is in there router currently (in terms of dsp modules). Also, what dsp resources are required for a 4fxo and a 2fxs card in the same router (as I also have a 4fxo card, which sounds much better in quality when compared to the 2fxo card)? Here is some output from my router:

dc-1760-01#show inv

...

NAME: "WIC/VIC 0", DESCR: "Two port FXO voice interface daughtercard"

PID: VIC-2FXO= , VID: 1.1, SN: 28737139

...

NAME: "WIC/VIC 1", DESCR: "Two port FXS voice interface daughtercard"

PID: VIC-2FXS= , VID: 1.1, SN: 32158645

...

NAME: "DSP Module Slot 0", DESCR: "Packet Voice DSP Module Slot 0"

PID: Packet Voice DSP Module Slot 0, VID: , SN:

NAME: "DSP Module 0", DESCR: "Packet Voice DSP Module with 1 C549 DSPs"

PID: Packet Voice DSP Module with 1 C549 DSPs, VID: 3.2, SN: VIC07501669

NAME: "DSP Port 0/0", DESCR: "C549"

PID: C549 , VID: , SN:

NAME: "DSP Module Slot 1", DESCR: "Packet Voice DSP Module Slot 1"

PID: Packet Voice DSP Module Slot 1, VID: , SN:

dc-1760-01#show voice dsp det

DSP DSP DSPWARE CURR BOOT PAK TX/RX

TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABORT PACK COUNT

==== === == ======== ========== ===== ======= === == ========= == ===== ============

C549 000 00 g711ulaw 9.4.12 Idle Idle 0 0 0/0 NA 0 11573/134301

C549 000 01 g711ulaw 9.4.12 Idle Idle 0 0 0/1 NA 0 8/11

Active Voice Call details

Current total analog signalling channels: 2

Current max allowed digital timeslot for voice: 0

Current active transcoding sessions: 0

Current free transcoding sessions: 0

Current active conferencing sessions: 0

Current free conferencing sessions: 0

Current number of DSP group: 1

Group 0:

Current allocated analog signalling channels: 2

Current free analog signalling channels: 0

Current allocated digital signalling channels: 0

Current free digital signalling channels: 0

Port(s) served: 0/0 0/1

Current Available MIPS: 100

SPMM DSPRM State Image D-sig D-sig A-sig A-sig Mips Voice/Xcode

Dsp Dsp allocate free allocate free Free Chan

0/0 0 UP FIXHC 0 0 2 0 100 0

edsp 0001 01 g711ulaw 0.1 IDLE 50/0/1.1

edsp 0002 02 g729r8 p 0.1 IDLE 50/0/1.2

edsp 0003 01 g729r8 p 0.1 IDLE 50/0/20.1

edsp 0004 02 g729r8 p 0.1 IDLE 50/0/20.2

edsp 0005 01 g711ulaw 0.1 IDLE 50/0/30.1

dc-1760-01#show voice port sum

IN OUT

PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC

============== == ============ ===== ==== ======== ======== ==

0/0 -- fxo-ls up dorm idle on-hook y

0/1 -- fxo-ls up dorm idle on-hook y

Thanks for anyones help

Shawn

Payal Bhaduri · ‎08-16-2011

Hi,

It looks like you are short of DSP's.

The dsp calculator will confirm this.

I am sending you a link for the dsp calculation:

http://www.cisco.com/cgi-bin/Support/DSP/cisco_prodsel.pl

smesiatowsky · ‎08-18-2011

I have seen that page before. The issue is, when the router starts up, there is no phone calls being made. So from that document, I require no dsp modules. But if I use that page in a different way and I would only like to make 1 phone call, I still only require 1 DSP module. I wanted to know if that is the real reason why I cannot see both vic cards at the same time when the router boots. It doesn't seem right that you require more DSP modules to see all of my vic cards. There seems to be some other issue here.