Cisco资深专家在线解决全世界用户voip问题集锦-连载四

王朝other·作者佚名  2008-05-19
窄屏简体版  字體: |||超大  

15................

One way voice issue

dilan@dpmce.com - SYSTEMS ENGINEER, DPMC ELECTRONICS PVT LTD.

Aug 7, 2003, 3:19am PST

I have tried setting up a basic VoIP configuration between 2 branch sites using 2 service provider networks using Cisco 1750

routers.

One setup was over a frame relay network and the other over a PPTP tunnel link that goes through several intermediate

routers.

The setup worked fine on the frame relay n/w. Over the PPTP link however,the calling party doesn't get the ringback although

the phone at the other end rings. When the called party answers, he can hear the calling party but the latter doesn't receive

the voice stream. This was always the case.

With some debugging I found that the called party sends the RTP voice stream to the wrong RTP port at the calling party. The

port nos were always 2 greater than the correct one.

Eg:- called party sends the voice stream to 18002 when the calling party's end shows that its RTP port should actually be

18000. There was no port mismatch the other way.

Has anyone faced this problem?

benhur.p - Staff, Cosmos Pvt Ltd

Aug 13, 2003, 7:50am PST

I have same problem, any updates on this. can you share with me if you know any workaround. TIA

thusain - CISCO SYSTEMS, CCIE

Aug 13, 2003, 1:23pm PST

What IOS version are you running, and can you post your config.

Taimoor

16..................

CBWFQ

adananm

Aug 11, 2003, 7:34am PST

What does conversation mean with respect to using cbwfq? Please see sample config:

Class-map: class-default (match-any)

334264 packets, 128049372 bytes

30 second offered rate 0 bps, drop rate 0 bps

Match: any

Weighted Fair Queueing

Output Queue: Conversation 266

Bandwidth 2551 (kbps)

(pkts matched/bytes matched) 58/17684

(depth/total drops/no-buffer drops) 0/0/0

exponential weight: 11

mean queue depth: 0

mazhar71 - CONSULTANT, PROBIL, CCIE

Aug 12, 2003, 7:12am PST

Hi,

http://www.cisco.com/en/US/tech/ ... ml#numberallocation

page may help you.

Regards

adananm

Aug 12, 2003, 9:06am PST

Thanks

17.............

VoIP Setup

gul_khan_99 - network engineer, Multinet Broadband Pakistan

Aug 2, 2003, 1:15am PST

We are working on VoIP Project and providing VoIP services for our customers.The following is the description of my project.

In this project, each customer can be assigned an account number and a Personal Identification Number (PIN), they can get

these information from scratch card, which are available on our customers outlets. The user dials a local number like 111-

XXX-YYY, and is connected to the local VoIP point of presence.

The user is then prompted by the Integrated Voice Response (IVR) to input the account and PIN numbers, and following an

authentication, after the proper authentication, a second dial tone allows the user to enter the target number. The user

dials destination phone number, which the local Voice Gateway maps to an IP address of a remote-zone Voice Gateway.

The remote-zone Voice Gateway then selects a gateway to terminate the call. This completes the call set up. During the call

setup the accounting is going on Database Server through AAA Radius and calculate the time duration and total minute use by

the caller and after termination of the call, billing automatically update user accounts with current statistics.

I need help on this project regarding equipment selection and their configuration.Can any one share his/her experience with

me.

Thanks for your cooperation.

vmoopeung

Aug 7, 2003, 1:27pm PST

May be this is a good place to start

http://www.cisco.com/en/US/netso ... vices_overview.html

aabbasi@teleping.com

Aug 7, 2003, 1:48pm PST

Hi,

I can help you implement this project locally. Feel free to contact me via e-mail.

Best regards,

18...............

Voip call will wait long time (12 seconds) to get ring back tone

mishao - Network Engineer, NETSTAR TAIWAN

Aug 5, 2003, 7:44pm PST

hi,

I setup 2* 3725 with alcatel PABX (T1 cas).the voip call is fine. But the problem is that we required to wait 12 seconds to

hear the ring back tone.

attached configuration.

best regards.

fred.

TTNTaiwanQuanta#s run

Building configuration...

Current configuration : 5003 bytes

!

version 12.2

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname TTNTaiwanQuanta

!

logging buffered 4096 debugging

enable password ttnnet!

!

username hongson password 0 hongson

clock timezone Taiwan 8

voice-card 1

!

ip subnet-zero

!

!

!

!

!

voice call carrier capacity active

voice rtp send-recv

voice dsp auto-reset

!

voice service voip

!

!

!

!

!

!

!

!

!

mta receive maximum-recipients 0

!

controller E1 1/0

framing NO-CRC4

ds0-group 1 timeslots 1-15,17-30 type e&m-immediate-start

cas-custom 1

!

controller E1 1/1

framing NO-CRC4

ds0-group 1 timeslots 1-15,17-30 type e&m-immediate-start

cas-custom 1

!

!

!

!

interface Loopback0

ip address 192.168.248.250 255.255.255.255

!

interface Multilink1

ip address 10.10.10.1 255.255.255.252

ip tcp header-compression iphc-format

fair-queue 64 32 4

traffic-shape group 106 1300000 31200 31200 1000

no cdp enable

ppp multilink

ppp multilink fragment-delay 25

ppp multilink interleave

multilink-group 1

ip rtp header-compression iphc-format

!

interface FastEthernet0/0

ip address 192.168.66.248 255.255.255.0

ip accounting output-packets

no ip route-cache

no ip mroute-cache

duplex auto

speed auto

no cdp enable

!

interface Serial0/0

description TTN IPLC Taiwan to china E1

ip address 192.168.248.1 255.255.255.252

encapsulation ppp

no ip route-cache

no ip mroute-cache

load-interval 30

no keepalive

no fair-queue

no cdp enable

ppp multilink

multilink-group 1

!

interface FastEthernet0/1

no ip address

shutdown

duplex auto

speed auto

no cdp enable

!

interface Serial0/1

description TTN VSAT BACKUP IPLC 512K

bandwidth 1024

ip address 192.168.248.5 255.255.255.252

encapsulation ppp

no ip mroute-cache

priority-group 1

no cdp enable

ppp multilink

multilink-group 1

!

router rip

passive-interface Serial0/0

passive-interface Ser

 
 
 
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