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New Member

VoIP quality of service

I have a point to point connection between two offices in different countries (256kbps), running VoIP, one site using FXS cards and the other one using E1 card. We´ve tried several QoS configurations and employees from site A can hear employees from site B but unfortunately it doesn´t happen the other way.

When I do an extended ping between both routers, it shows: round-trip min/avg/max = 572/587/853 ms

Is this time that bad in order to cause such a bad quality?

Regards,

Marc

4 REPLIES
Cisco Employee

Re: VoIP quality of service

The 600ms round trip time will cause latency in the conversation, but not bad voice quality. I think the problem is something different.

Can you post the configuration for both of the routers, and also which version each one is running?

New Member

Re: VoIP quality of service

R1

CETCO-Corpac#sh run

Building configuration...

Current configuration:

!

version 12.0

service timestamps debug datetime localtime

service timestamps log datetime localtime

no service password-encryption

!

hostname CETCO-Corpac

!

logging buffered 10000 debugging

enable password popo

!

!

class-map qos

match access-group 102

!

!

policy-map wan

class qos

priority 80

!

ip subnet-zero

!

!

!

!

voice-port 1/0/0

!

voice-port 1/0/1

!

voice-port 1/1/0

!

voice-port 1/1/1

!

!

dial-peer voice 1 pots

destination-pattern 10

port 1/0/0

prefix ,

!

dial-peer voice 2 pots

destination-pattern 10

port 1/0/1

prefix ,

!

dial-peer voice 3 pots

destination-pattern 10

port 1/1/0

prefix ,

!

dial-peer voice 4 pots

destination-pattern 10

port 1/1/1

prefix ,

!

dial-peer voice 20 voip

destination-pattern 20..

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.41

!

dial-peer voice 30 voip

destination-pattern 30..

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.65

!

dial-peer voice 70 voip

destination-pattern 70...

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.42

!

dial-peer voice 100 voip

destination-pattern 5...

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:140.12.1.1

!

num-exp 3120 2020

num-exp 3130 3030

num-exp 3127. 7027.

num-exp 325... 5...

!

interface Loopback0

ip address 10.9.0.67 255.255.255.255

no ip directed-broadcast

!

interface Ethernet0/0

description Interface WAN Corpac de CETCO

ip address 10.9.0.35 255.255.255.224

no ip directed-broadcast

ip ospf priority 0

half-duplex

service-policy output wan

traffic-shape rate 3000000 3000000 3000000 1000

ip rsvp bandwidth 7500 7500

!

interface Ethernet0/1

description Interface LAN Corpac de CETCO

ip address 172.16.8.1 255.255.252.0

no ip directed-broadcast

!

router ospf 1

network 10.9.0.32 0.0.0.31 area 0

network 10.9.0.67 0.0.0.0 area 0

network 172.16.8.0 0.0.3.255 area 0

!

ip classless

ip route 0.0.0.0 0.0.0.0 10.9.0.33

ip route 10.9.0.39 255.255.255.255 10.9.0.33

ip route 10.9.0.40 255.255.255.255 10.9.0.33

ip route 10.9.0.41 255.255.255.255 10.9.0.33

ip route 10.9.0.42 255.255.255.255 10.9.0.33

ip route 10.192.16.0 255.255.252.0 10.9.0.33

ip route 172.16.4.0 255.255.255.0 10.9.0.33

ip route 172.16.5.0 255.255.255.0 10.9.0.33

ip route 172.16.6.0 255.255.255.0 10.9.0.33

ip route 172.16.7.0 255.255.255.0 10.9.0.33

ip route 172.16.12.0 255.255.252.0 10.9.0.33

ip route 172.16.18.0 255.255.254.0 10.9.0.33

ip route 172.30.32.0 255.255.240.0 10.9.0.33

ip route 192.168.104.0 255.255.255.0 172.16.8.2

ip route 192.168.105.0 255.255.255.0 172.16.8.2

ip route 192.168.106.0 255.255.255.0 172.16.8.2

no ip http server

!

access-list 102 permit ip host 10.9.0.35 any precedence critical

access-list 102 permit udp host 10.9.0.35 any range 16384 32767

snmp-server engineID local 00000009020000308078B460

snmp-server enable traps voice poor-qov

!

line con 0

password #nick

transport input none

line aux 0

line vty 0 4

password #nock

login

!

no scheduler allocate

end

R2

CETCO-RepPanama#sh run

Building configuration...

Current configuration:

!

version 12.0

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname CETCO-RepPanama

!

logging buffered 5000 debugging

enable password milton!

!

class-map qos

match access-group 102

!

!

policy-map wan

class qos

priority 80

!

ip subnet-zero

!

!

dlsw local-peer peer-id 172.16.12.1

dlsw remote-peer 0 tcp 140.1.1.12

dlsw bridge-group 1

!

!

voice-port 1/0/0

timeouts initial 5

timeouts interdigit 5

!

voice-port 1/0/1

!

voice-port 1/1/0

!

voice-port 1/1/1

!

!

dial-peer voice 1 pots

destination-pattern 20

port 1/0/0

!

dial-peer voice 2 pots

destination-pattern 20

port 1/0/1

!

dial-peer voice 3 pots

destination-pattern 20

port 1/1/0

!

dial-peer voice 4 pots

destination-pattern 20

port 1/1/1

!

dial-peer voice 10 voip

destination-pattern 10..

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.35

!

dial-peer voice 30 voip

destination-pattern 30..

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.65

!

dial-peer voice 70 voip

destination-pattern 70...

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.42

!

dial-peer voice 50 voip

destination-pattern 50250

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.42

!

dial-peer voice 100 voip

destination-pattern 5...

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:140.12.1.1

!

dial-peer voice 5 pots

destination-pattern 1120

port 1/0/0

!

dial-peer voice 6 pots

destination-pattern 1120

port 1/0/1

!

dial-peer voice 7 pots

destination-pattern 1120

port 1/1/0

!

dial-peer voice 8 pots

destination-pattern 1120

port 1/1/1

!

num-exp 3110 1010

num-exp 3127. 7027.

num-exp 3130 3090

num-exp 325... 5...

!

interface Loopback0

ip address 10.9.0.73 255.255.255.255

no ip directed-broadcast

!

interface Ethernet0/0

description Interface WAN Cetco RepPanama

ip address 10.9.0.41 255.255.255.224

no ip directed-broadcast

ip route-cache flow

ip ospf priority 0

load-interval 30

service-policy output wan

traffic-shape rate 1000000 1000000 1000000 1000

ip rsvp bandwidth 7500 7500

!

interface Ethernet0/1

description Interface LAN Cetco RepPanama

ip address 172.16.12.1 255.255.252.0

no ip directed-broadcast

ip route-cache flow

bridge-group 1

!

router ospf 1

network 10.9.0.32 0.0.0.31 area 0

network 10.9.0.73 0.0.0.0 area 0

network 172.16.8.0 0.0.3.255 area 0

network 172.16.12.0 0.0.3.255 area 0

!

ip classless

ip route 0.0.0.0 0.0.0.0 10.9.0.33

ip route 10.9.0.35 255.255.255.255 10.9.0.33

ip route 10.9.0.39 255.255.255.255 10.9.0.33

ip route 10.9.0.40 255.255.255.255 10.9.0.33

ip route 10.9.0.41 255.255.255.255 10.9.0.33

ip route 10.9.0.42 255.255.255.255 10.9.0.33

ip route 10.192.16.0 255.255.252.0 10.9.0.33

ip route 172.16.4.0 255.255.255.0 10.9.0.33

ip route 172.16.5.0 255.255.255.0 10.9.0.33

ip route 172.16.6.0 255.255.255.0 10.9.0.33

ip route 172.16.7.0 255.255.255.0 10.9.0.33

ip route 172.16.8.0 255.255.252.0 10.9.0.33

ip route 172.16.18.0 255.255.254.0 10.9.0.33

ip route 172.30.32.0 255.255.240.0 10.9.0.33

no ip http server

!

access-list 102 permit ip host 10.9.0.41 any precedence critical

access-list 102 permit udp host 10.9.0.41 any range 16384 32767

snmp-server host 10.192.17.2 version config entity envmon syslog dlsw voice

snmp-server host 10.192.17.204 version config entity envmon syslog dlsw voice

bridge 1 protocol ieee

!

line con 0

password yoyo

login

transport input none

line aux 0

line vty 0 4

password yoyo

login

!

scheduler interval 500

end

R3

CETCO_PRIN_JTU#sh run

Building configuration...

Current configuration:

!

version 12.0

service timestamps debug datetime localtime

service timestamps log datetime localtime

no service password-encryption

!

hostname CETCO_PRIN_JTU

!

logging buffered 10000 debugging

enable password #cetpc

!

!

class-map qos

match access-group 102

!

!

policy-map wan

class qos

priority 160

!

ip subnet-zero

!

!

dlsw local-peer peer-id 172.16.0.4

dlsw remote-peer 0 tcp 172.30.40.1 lsap-output-list 201

dlsw remote-peer 0 tcp 172.16.7.1 lsap-output-list 201

dlsw bridge-group 1

!

!

voice-port 2/0/0

timeouts call-disconnect 0

connection plar +70270

!

voice-port 2/0/1

timeouts call-disconnect 0

!

voice-port 2/1/0

timeouts call-disconnect 0

connection plar +50250

!

voice-port 2/1/1

!

voice-port 3/0/0

connection plar +60260

!

voice-port 3/0/1

!

voice-port 3/1/0

!

voice-port 3/1/1

!

!

dial-peer voice 10 voip

destination-pattern +10..

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.67

!

dial-peer voice 70 voip

destination-pattern +70...

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.74

!

dial-peer voice 7 pots

destination-pattern 90

port 3/1/0

!

dial-peer voice 8 pots

destination-pattern 90

port 3/1/1

!

dial-peer voice 20 voip

destination-pattern 20..

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.73

!

dial-peer voice 101 pots

destination-pattern 30.

port 2/0/0

!

dial-peer voice 50 voip

destination-pattern 50250

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.72

!

dial-peer voice 60 voip

destination-pattern 60260

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:10.9.0.39

!

dial-peer voice 100 voip

destination-pattern 5...

req-qos controlled-load

acc-qos guaranteed-delay

codec g729r8 bytes 80

ip precedence 5

no vad

session target ipv4:140.12.1.1

!

dial-peer voice 9 pots

destination-pattern 1290

port 3/1/0

!

dial-peer voice 11 pots

destination-pattern 1290

port 3/1/1

!

dial-peer voice 1 pots

destination-pattern 30...

port 2/0/0

!

num-exp 3110 1010

num-exp 3120 2020

num-exp 325... 5...

num-exp 31250 50250

num-exp 31260 60260

!

interface Loopback0

ip address 10.9.0.65 255.255.255.255

no ip directed-broadcast

!

interface Ethernet0/0

description Interface WAN

ip address 10.9.0.33 255.255.255.224

no ip directed-broadcast

!

interface Ethernet0/1

ip address 172.16.0.4 255.255.252.0

no ip directed-broadcast

bridge-group 1

!

router ospf 1

redistribute static subnets

network 10.9.0.32 0.0.0.31 area 0

network 172.16.0.0 0.0.3.255 area 0

!

ip classless

ip route 0.0.0.0 0.0.0.0 172.16.0.20

ip route 10.100.10.0 255.255.255.0 172.16.0.3

ip route 10.192.16.0 255.255.252.0 10.9.0.62

ip route 10.200.10.0 255.255.255.0 172.16.0.3

ip route 172.16.5.0 255.255.255.0 10.9.0.39

ip route 172.30.32.0 255.255.240.0 10.9.0.38

no ip http server

!

access-list 120 permit tcp any host 172.20.1.75 range 3230 3231

access-list 120 permit udp any host 172.20.1.75 range 3230 3235

access-list 120 permit ip any any precedence critical

access-list 121 permit tcp any host 172.19.9.200 range 3230 3231

access-list 121 permit udp any host 172.19.9.200 range 3230 3235

access-list 121 permit ip any any precedence critical

access-list 201 permit 0x0000 0x0D0D

access-list 201 deny 0x0000 0xFFFF

snmp-server engineID local 000000090200003080AA9F41

snmp-server community piura RO

snmp-server community tumbes RW

snmp-server community version view v1default RO

snmp-server trap-source Ethernet0/0

snmp-server host 10.192.17.2 version config entity envmon syslog dlsw voice snm

p

snmp-server host 10.192.17.204 version config entity envmon syslog dlsw voice s

nmp

bridge 1 protocol ieee

!

line con 0

password #cettp

login

transport input none

line aux 0

line vty 0 4

password #cettp

login

!

end

R4

PERUT02#sh run

Building configuration...

Current configuration:

!

version 12.0

service timestamps debug uptime

service timestamps log uptime

service password-encryption

!

hostname PERUT02

!

logging console emergencies

enable password 7 01100310585B

!

username marcos password 7 110A1016141D

!

!

!

!

memory-size iomem 10

ip subnet-zero

!

!

dlsw local-peer peer-id 172.16.0.3

dlsw remote-peer 0 tcp 140.1.1.12

dlsw bridge-group 5

!

!

!

!

interface Ethernet0/0

ip address 172.16.0.3 255.255.252.0

no ip directed-broadcast

bridge-group 5

!

interface Serial0/0

ip address 140.12.1.2 255.255.0.0

no ip directed-broadcast

no ip mroute-cache

!

interface Serial0/1

no ip address

no ip directed-broadcast

shutdown

!

router ospf 1

network 140.12.0.0 0.0.255.255 area 0

network 172.16.0.0 0.0.3.255 area 0

!

ip classless

ip route 0.0.0.0 0.0.0.0 172.16.0.4

ip route 10.9.0.32 255.255.255.224 172.16.0.4

ip route 10.100.10.0 255.255.255.0 172.16.0.6

ip route 10.200.10.0 255.255.255.0 172.16.0.6

ip http server

!

bridge 5 protocol ieee

banner motd ^C

### ACCESO RESTRINGIDO SOLO PERSONAL IT ### ^C

!

line con 0

password 7 045802150C2E

login

transport input none

line aux 0

line vty 0 4

password 7 104D0C0D0647

login

!

no scheduler allocate

end

LAN(e0/1)- R1- e0/0--e0/0-R3--(e0/0)LAN--R4-WANs0-R5

|

|

R2

Cisco Employee

Re: VoIP quality of service

Thanks for the configurations, but I only see analog voice ports and no E1. You will probably want to open a case with TAC so they can sort this out with you.

New Member

Re: VoIP quality of service

Hi ,

Is your problem solved.I would request you to please let me know the soution incase it has been solved.And would request Cisco to kindly publish the solved cases as like this one so that it will be a good databse of known and solved problems and helps all.Or if it is already there may I I have the URL please for the same.Thanks...

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