Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Need to test a bunch of FXO cards.

I am tasked with testing a bunch of FXO cards (VIC-2FXO) and I have a 1760 router with an FXS card in it.  I configured the router so that when I call from an IP phone (ext 4000) to the FXS card port 1/0 (ext 4015) it calls the FXO card on port 0/0 which uses plar to ext 4444 which is port 1/1 on the FXS card.

I also tried to plar calls to ext 4001 an IP phone.

When I call 4015 from the IP phone, it rings the 4444 extension once then the FXS port 1/0 (ext 4015) hangs up.  A call remains between the FXO port 0/0 and the FXS port 1/1 but since the FXS port 1/0 dropped off you can not talk to the IP phone.

4001 calls ---> 4015 FXS 1/0 which rings --->  FXO 0/0  using PLAR rings ---> 4444 which is on FXS port 1/0

The port light for FXS 1/0 comes on during the call proces but then goes out.  The port lights for the FXO 0/0 and FXS 1/1 stay light until I unplug th RJ11 cable between them.

Any ideas how I can keep FSX 1/0 from dropping one the call is answered on FXS 1/1?

Current configuration : 1917 bytes

!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
no aaa new-model
memory-size iomem 15
voice-card 0
!
voice-card 1
!
interface FastEthernet0/0
ip address 192.168.69.200 255.255.255.0
speed auto
!
voice-port 0/0
connection plar 4444
!
voice-port 0/1
!
voice-port 1/0
station-id number 4015
!
voice-port 1/1
station-id number 4444
!
dial-peer voice 400 pots
destination-pattern 4015
port 1/0
!       
dial-peer voice 200 pots
incoming called-number .
port 0/0
!
dial-peer voice 444 pots
destination-pattern 4444
port 1/1
!
telephony-service
max-ephones 6
max-dn 6
ip source-address 192.168.69.200 port 2000
auto assign 1 to 6
max-conferences 4 gain -6
transfer-system full-consult
create cnf-files version-stamp Jan 01 2002 00:00:00
!
ephone-dn  1  dual-line
number 4000
!       
ephone-dn  2  dual-lin
number 4001
!
ephone  1
no multicast-moh
mac-address 000A.8AF0.3016
type 7960
button  1:1
!
ephone  2
no multicast-moh
mac-address 001B.535C.CABD
type 7940
button  1:2
!
line con 0
line aux 0
line vty 0 4
login
!
end

Thanks

1 REPLY
Green

Need to test a bunch of FXO cards.

Michael,

I have seen issues like this and its all dow to actual physical wiring.

Your 2 port FXS & FXO cards have 2 lines available on each port.

Can you ensure that you wire everything as a single 2 wire.

FXS 1/0  RJ11 PIN3 ------------------------------------------------- FXO 0/0 PIN 3

FXS 1/0  RJ11 PIN4 ------------------------------------------------- FXO 0/0 PIN 4

FXS 1/1  RJ11 PIN3 ------------------------------------------------- EXT 4444

FXS 1/1  RJ11 PIN4 ------------------------------------------------- EXT 4444

Do not put through any other wires

Regards,
Alex.
Please rate useful posts.

Regards, Alex. Please rate useful posts.
175
Views
0
Helpful
1
Replies