Acknowledgement problem

Hi All,
I'm having some weird problems with acknowledgements in XI.
I have an interface which runs with the aid of BPM. In this BPM, an acknowledgement is expected, and when it is not received, there is a timeout set in place. So far so good.
Now when we run this interface, which has run without problems for months, there is a timeout on the BP every single time. All data is correctly processed, but the BP times out on the acknowledgement step.
But here's the weird thing: when I go into sxmb_moni_bpe and see the process waiting for longer than usual, i smell something fishy, and go to the process view. It seems everything is done and now the process waiting for the acknowledgement. so I go into the sxmb_moni, and take a look at the message that's supposed to get the ack back. The status here is still "awaiting acknowledgement".
But what's weird is that the moment I display the message, through sxmb_moni or the detail of the message, the acknowledgement is instantly completed.
Does anyone have an idea what could be causing this, because it's not nice to have the sxmb_moni open all day and keep refreshing it, just to keep your processes running...
We are using XI 3.0 on SP16.
Thanks and regards,
Yordy

Hi Moorthy,
I saw the note and the blog you provided this morning, but the receiving system is R/3 through the IDOC adapter, so there seems to be no correlation between this problem and the blog.
It's really strange, because the acknowledgement seems to be in XI already, it's just that it's only recognised as such when you display the message...
Thanks and regards,
Yordy

Similar Messages

BPM Transport acknowledgment problem

Hi,
I'm making a scenarion where
Sync RFC -> 'ASync' FTP
using the BPM.
I need to know if the file transport went allright or not and will inform the user direclty.
So I've started to use the BPM's acknowledgment Transport feature, to know if it was successful transfered or not.
The 'file' is transfered however, an error occur when trying to get the acknowledge.
The message monitoring says:
2010-10-29 08:25:50     Success     Acknowledgement creation triggered for type: SystemAck
2010-10-29 08:25:50     Success     Acknowledgement creation triggered for type: AckNotSupported
2010-10-29 08:25:50     Success     Acknowledgement sent successfully for type: SystemAck
How should I interprent this error message?
Does this mean that IIS FTP server not supporting this acknowledge feature?
Do I need to do some special configuration of acknowlege messages?
ps this PBM stuff and ack part is new to me
Best regards
Tobias

Thx, but I have already read those forum threads.
I find the error strange, I can see that the file is transfered then it's seem like the process stops and wait on the acknowlegement. Then when the deadline time is up then it returns saying that it failed.
Does the FTP server need to have some special feature for getting this transport acknowledgment?
Best regards
Tobias

IDOC(3.1H)- XI- SOAP - Acknowledgment Problem

We are using IDOC(from 3.1H system) ->> XI ->> SOAP(Async) scenario for purchase orders. We have defined IDOC-Receiver in the communication channel for the SAP business system.
We are getting following error in adapter engine for sending the acknowledgment back to SAP(3.1) system.
<i>Received XI System Error. ErrorCode: NO_BACK_SYSTEM_IN_HOPLIST ErrorText: ErrorStack: Legacy system to which acknowledgment message is to be sent is missing in hoplist (with wasread=false)</i>
Any help is appreciated.
Thanks!
MP

Hi,
have a look at this SAP note: 767681
for such an error and SOAP adapter
let me konw if it worked
Regards,
michal
<a href="/people/michal.krawczyk2/blog/2005/06/28/xipi-faq-frequently-asked-questions"><b>XI / PI FAQ - Frequently Asked Questions</b></a>

BP Transport Acknowledgement problem...

Hi,
In, XI3.0 stack 11, Business process have two SEND STEPs one for PO and another one for GI and the required condition is GI idoc should get posted only after posting PO idoc.
As of now I have put transport acknowledgement in the first send step so that once all PO idocs are sent to r/3 then only the second SEND step will post the GI idocs.
But transport acknowledgement works only if I keep refreshing the sxmb_moni. If I drop a file and not opening the sxmb_moni for say one hour or one day the second SEND step is not getting processed. Only if I click refresh or open the sxmb_moni again, it is processing the next send step and post the GI idoc.
Could any one help me to resolve the strange behaviour of transport acknowledgement? Is sxmb_moni something to do with getting any acknowledgement? What is happening in the background while refeshing the sxmb_moni?
thanks,
sasikumar

When copying systems, you should never copy one system alone, but always CRM and ECC at the same time. Since both are closely coupled and both contain tables, in which it is described which kunnr is mapped to which CRM GUID, it is without alot of effort and deep middleware knowledge not possible to reactivate the data exchange properly. But even then you have to make sure that in both systems either the same partner numbers do not already exist or clear one system from all existing partners. Some of these mapping tables are i.e. CRMM_BUT_CUSTNO and CRMM_BUT_CONTNO, which contain the mapping information that is now obsolete. Usually these tables should be the same in CRM and ECC (and the data also), but in your case this is not true unfortunately. Even an initial download does not help as this is looking at these tables.
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Hope this helps, Kai

Acknowledge problem

Hi
I am trying to implement acknowledgement in ABAP client proxy, intend to get acknowledgement from receiver.
but when I am writing abap code, I found there is no if _ wsprotocol _ async _ messaging in our SAP system,our SAP system version is WAS 620 with SAP_BASIS patch 0043 SAPKB62043, and APPINT 200_620 0006 SAPK-20006INAPPINT
If I want to use acknowledgement, do I need to upgrade, which level I need?
thank you very much

> No , I do want to get an IDoc acknowledgment in system level, and I know it is not possible to get an application level acknowledgment due to receiver is an file adapter
IDoc sender adapter requests the following acknowledgements:
- SystemErrorAckRequested
- ApplicationAckRequested
- ApplicationErrorAckRequested
File receiver adapter supports only system acknowledgements and system error acknowledgements if they are requested by the sender.
So you will get:
- SystemErrorAck when message has not reached the target system
- AckRequestNotSupported for all others acknowledgement types (your case is here)
Regards,
Jakub

Acknowledge problem when upgrading aqapi.jar

Hi,
I am trying to upgrade my java TopicSubscriber interfacing with Oracle AQ, with a later version of aqapi.jar.
When switching to the later version of aqapi.jar then the messages does not get acknowledged properly.
This code used to work fine, but with the upgrade it seems like I have to add a session.commit() to my code, otherwise the messages are being resent to my application during restart.
What is the difference between aqapi13.jar(AQAPI13_BUILT_WITH_RDBMS_VERSION_9.0.2.0.0) and aqapi.jar (AQAPI_BUILT_WITH_RDBMS_VERSION_11.1.0.7.0) in terms of acknowledgement?
How come there is a need for a commit in the newer version of aqapi and not in the older version?
Thanks!
Sample code used to reproduce this issue
import java.util.*;
import java.io.*;
import java.lang.reflect.*;
import javax.jms.*;
import javax.naming.*;
import oracle.jms.*;
import java.io.Serializable;
while(true){
try {
javax.jms.TopicSubscriber _subscriber;
javax.jms.TextMessage _message;
javax.jms.TopicConnectionFactory _myFactory      = AQjmsFactory.getTopicConnectionFactory( "localhost", "LOCALAQ", 1521, "thin" );
javax.jms.TopicConnection myConnection   = myFactory.createTopicConnection( "sys as sysdba", "**PASSWORD**" );
javax.jms.TopicSession mySession      = myConnection.createTopicSession(true,javax.jms.Session.CLIENT_ACKNOWLEDGE);
javax.jms.Topic myTopic        = ( (AQjmsSession) mySession).getTopic( "sys", "SAMPLE_JMS_Q" );
_myConnection.start();
String messageSelector = new String("");
subscriber                        = mySession.createDurableSubscriber( _myTopic, "sys", "", false);
while(true){
message                            = ( javax.jms.TextMessage ) subscriber.receive( 0 );
System.out.println("_message.getText() : "+_message.getText());
System.out.println("_message.getJMSMessageID(): "+_message.getJMSMessageID());
_message.acknowledge();
//_mySession.commit() // needed for new version of aqapi.jar
}catch(Exception e){
e.printStackTrace();
}

Where can I find documentation describing the aq session class?
I decompiled AQjmsMessage and found these differences in the code.
aqapi.jar
public void acknowledge()     throws JMSException {
     Object obj = null;
     *if(session.getAcknowledgeMode() == 2){*
          Connection connection = session.getDBConnection();
          try{
               connection.commit();
          catch(SQLException sqlexception){
               throw new AQjmsException(sqlexception);
aqapi13.jar
public void acknowledge()     throws JMSException{
     Object obj = null;
     *if(session.getAckMode() == 2){*
          Connection connection = session.getDBConnection();
          try{
               connection.commit();
          catch(SQLException sqlexception){
               throw new AQjmsException(sqlexception);
Printing out the acknowledge mode with aqapi.jar gives these results
_mySession.getAckMode(): 2
_mySession.getAcknowledgeMode(): 0
and with aqapi13.jar
_mySession.getAckMode(): 2
I believe this is the reason why acknowledge() does not work properly with the later version of aqapi.jar
Is it possible to force the AcknowledgeMode to 2 when creating the TopicSession ?
Thanks for any ideas how to solve this!
Edited by: user6102378 on Jul 1, 2010 3:57 AM

Transport acknowledgement

I'm using BPM in my scenario. In a loop, I'm sending out IDocs, for which I'm using transport acknowledgement.
The strange thing is that the IDoc is received in R/3, but XI is still awaiting the transport acknowledgement. Sometimes this ackowledgement comes pretty fast, within a few seconds, but another time it takes up to 10 minutes before the transport acknowledgement is received.
How is this possible? The XI IDoc adapter is supposed to send the transport acknowledgement, right? How can it be that is takes this long for the BPM send step to receive it?

Hi
Does anyone know if there has been an update to this issue from SAP side. I have the same problem and the issue can be also be found discussed in following threads:
Re: Acknowledgement problem
SXMB_MONI and BPM acknowledgement status updates
I think it is weird that you will have to update the status in SXI_MONITOR to actually get the acknowledgement back. I have experienced the transport ack coming back right away, but now I also have this problem.
Hopefully someone has been enlightened lately?
Thanks!
regards Pavel
Edited by: Pavel Jonas on Jan 29, 2009 3:45 PM

Sorry: We were unable to locate information relating to your account. Please try again later. If the problem persist please contact us.

My app was approved over the weekend and i have integrated iAd into my app and signed all the documents, etc. I get no ads in my app and get this error under iAd. I see other posts about this too but there seems to be no solution and Apple is not acknowledging problem? I have also submitted a help request but no one has got back to me despite the email saying they would within 24 hours. Anyone heard of anything?

Same here, very frustrating, and annoying.
Can't we have a proper error message than "Network temporary unavailable" please? at least we would know what to look for.
Going through the internet, I am seeing tons of people with the same problem,
Can apple please please please resolve this?
Thanks
Heider

Why won't Apple fix this problem of iTunes Cutting off songs?

I've owned seven different ipods and three iPhones. On EVERY ONE OF THEM iTunes cuts off many songs after two or three seconds of playing. We're talking here about songs either uploaded from commercially purchased DVDs or the iTunes store. I have no bootleg music, I don't customize anything related to iTunes. I just buy music and download it into iTunes from MacBook Pro laptops that are similarly as standard as one can get. Yet when I listen to the albums of songs I've just purchased, random songs play for two seconds and then change to another song. When I've researched this issue across the Web I've found detailed complaints going back as early as 2004 and I can't believe that EVERY Apple iTunes system and device I've purchased over many years has behaved in this exact manner. What are these "Apple Support Communities" FOR is Apple fails to either correct the problems they report or, worse, even acknowledge problems that are documented by thousands of users of a wide variety of iTunes related products? I don't want to have to use a work-around or a reload or some of the other Rube Goldberg-like solutions others have suggested in these and other forums. I'm spending thousands of dollars on Apple equipment and software and I simply want the Apple iTunes devices and music that I buy to WORK AS ADVERTISED, which they don't. I just want my music to play as it is supposed to play. Why can't Apple make that happen?

That's happing to me, any solution ?

Problems galore with N 5800

After years of being a Sony Ericsson fan, I decided to try out my first Nokia and got the N5800 in March. It has been my worst experience. The phone freezes constantly. I have to wait several several seconds between actions. The response time is appalling and sometimes it just blacks out. Orange customer service told me to reset the phone which I have done along with several switch off/restarts over the days. Nothing has helped. It also seems to have problems recognizing the caller numbers from my phone book. I have tried Orange customer service but they say although they have had several complaints, Nokia won't recall the phone nor acknowledge problems. Has anyone else suffered this fat and do you have any advice? I am trying to get orange to pick up the phone and replace it in the hope it is a one off problem with the handset I got.
Otherwise any input gratefully received.
thanks
L

My best advice is to persist with Orange. If three of the same handsets still don't solve your problem, it's then you can ask for a new phone - but ask every single time when you speak to handset faults. Also consider asking for a small £10 credit each time you phone, as a goodwill gesture for stress and lost time.
In the meantime, every time you get a phone run Nokia Software Updater on your computer and check for updates for the phone.
I have a 5800 myself, and it was a bit quirky to start with. Now I am on software version v21.0.025 and I am much happier with the phone!
To check which software version you have, dial *#0000#.
Message Edited by basmic on 16-May-2009 09:57 AM
5800 v20.0.012 -- 6500s v9.40 -- 6233 v5.43 -- 5140 v3.13

DataTable retrieves false (old) information (sometimes problem)

I've been scratching my head for days now about a problem I'm experiencing with a datatable showing me old information.
I have a simple table which stores Clients
clientid serial (auto increments)
client char This stores the name of the client.
I have a dataTable as below:
              <h:dataTable id="clientTable" rows="10"
              rowClasses="list-row-odd,list-row-even"
              value="#{Client.listClients}" var="item"
                    binding="#{Client.data}" >
                    <h:column>
                        <f:facet name="header">
                            <h:outputText value="#{msg.tbl_no}" />
                        </f:facet>
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               <f:facet name="header">
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                        <h:commandLink id="edit" action="#{Client.editClient}">
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                        <h:outputText value="#{msg.tbl_seperator}" />
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        Session session = HibernateUtil.getSessionFactory().getCurrentSession();
        session.beginTransaction();
     List result = session.createQuery("from ClientBean").list();
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            ClientBean clientbean = (ClientBean) result.get(i);
            clientbean.setNo(i % 10);
     return result;
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        ClientBean selectedClient = (ClientBean) this.getData().getRowData();         // Get the selected item from dataTable
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        ctx.getExternalContext().getSessionMap().put("EditClient", selectedClient );    // Save item as sessionmap
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    // Save the edited item.
    public String saveEditClient(){
        ClientBean clientbean = (ClientBean)JSFUtil.getManagedObject("EditClient"); // Get the Session mapped item
         * Now we must rename the directory if it exists
         * Will require a valuechanger method on the Client text box so we can get the original Client Name.
        if(oldClient == null){
            // Nothing has changed.
            return "cancel";
        Settings settings = new Settings();
        File clientSourceDir = new File(settings.getDest() + "/" + oldClient.toLowerCase());
        File clientDestDir = new File(settings.getDest() + "/" + clientbean.getClient().toLowerCase());
        // Move the file accross.
        boolean success = clientSourceDir.renameTo(clientDestDir);
        if (!success){
            System.out.println("Failed to copy");
            return "cancel";
        /** Now commit to the database */
        Session session = HibernateUtil.getSessionFactory().getCurrentSession();    // Create the session
        session.beginTransaction();                                                 // build a transaction
        session.merge(clientbean);                                                  // Save the current object.
        session.getTransaction().commit();                                          // Commit this to the database
        return "success";
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<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<f:loadBundle basename="pdfcat.bundle.messages" var="msg" />

<%@ taglib prefix="jcr" uri="http://www.pais.com.au" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<link href="../css/pdfcat.css" rel="stylesheet" media="screen" />
<script language="JavaScript" type="text/javascript" src="../js/form.js" ></script>
<html>
    <f:view>
        <head>
            <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
            <title><h:outputText value="#{msg.client_title}" /></title>
        </head>
        <body onload="document.getElementById('form_input:client').focus();">
            <div id="headingback">
                <div id="heading"><h:outputText value="#{msg.client_edit_heading}" /></div>
            </div>
            
            <jcr:catnav />
            <h:form id="form_input">
                
                <h:outputText value="#{msg.client_form_client}" />
                
                <h:inputText id="client" valueChangeListener="#{Client.clientChangeListener}" value="#{EditClient.client}" required="true" />
                
                <h:message for="client" errorClass="err" />
                
                <p>
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            </h:form>
     </body>
    </f:view>
</html>To test I do the following:
First I click on my Edit button for the item I want to edit, I change the name of the client and hit the submit button, this returns to my dataTable listing. Now I leave the page there for about 5 minutes, then reload the page and it shows me the old value. It's not showing me the new value which is in the database for that one item I changed, then if I refresh sometimes it will show me the correct value and sometimes not! I hate sometimes problems there always a pain.
It's like there are two objects for that one item entry and the dataTable gets confused and just picks one of them (randomly).
Am I on the right track here?
Can anyone shed some light on this problem and a possible solution?
I'm using JSF 1.1 RI, hibernate 3, postgres 7.4 database, netbeans 5.5 on a FreeBSD 6.2 machine.

Just spotted you are having connect and disconnect problems with HH2.
Short answer:
Try this workaround; despite my own scepticism when first advised about it, this will fix both wifi and ethernet problems; the fact that your HH2 will not connect to your wifi and/or your ethernet connector is related to the HH2’s acknowledged problem with its DHCP table.
Access the Hub and set your wifi channel to non-automatic and select Channel 11.
Save the settings and re-boot the HomeHub and your PC.
Check your performance and that your wifi and/or ethernet connection is working normally, if this works you are OK, if not repeat the cycle and choose, in turn, Channels 9 and 1.
As your line speed is under-performing, it is now very important let the HH run very specifically for the training period uninterrupted (whether you believe that to be 72 hours, five days or ten days is for you to decide). I stress, do NOT reboot or disconnect the HH during that period to enable the exchange and it to establish the optimum speed for the line (during that period you may observe the HH resetting itself during renegotiation - that is normal).
Long answer:
See my post of22 Sept 2011:
BT Failure & Sanctioned Workaround for HomeHub V 2.0 A
Good Luck
+++###+++
If you feel the problem is solved, please don't forget to come back and confrm the fix or post any other solution. It helps those who really need it to judge whether it works or not.
Also, mark the thread solved

N97 version 2.0 problems

I am with 3 mobile and have waited for version 20 to be released and now that it is i want the old one back!
firstly and the main problem is that it wont connect to the internet now, through 3internet or the wifi, however the youtube app still works??? Also when i recieve a message the screen doesnt light up/ turn on, and when the phone is locked you get no response from pressing the 'volume' keys on the side.
However i have numerous other problems with the phone, the camera lens is scratched and 3 refused to replace it saying it was my fault and there is no design fault, and also along the top and right of the screen there is a dark grey line that is clearly visible, oh and there is a dead pixel but that isnt major.
Nokia need to sort their act out shipping a £400 phone with all these stupid faults and bugs!!!!!!!

kman00 is correct a hard reset should solve your connection problem, and the camera scratch problem is an acknowledged problem and Nokia care centres have been told to replace lens covers under warranty, Google your local one and take phone there for a fix.
Good Luck
If I have helped at all, a click on the White Star is always appreciated :
you can also help others by marking 'accept as solution'

Seemingly random email sending and receiving problems

I am visiting some friends and have been able to access their Wifi no problem--surfing, streaming and getting some emails easily.
Today I noticed, after a few hours of doing some work and personal emailing, that some of my emails have not been going out. I use Yahoo and Exchange for personal and work, respectively.
I see one email sitting in the iPad mail app's "outbox" and all the others are nowhere to be found. When I check on l
Iine to my account via the Yahoo or Exchange websites, I can't find these sent messages in the "sent" folder.
At the same time, I saw that, in my Exchange account, I've received a bunch of emails but they have not appeared in the iPad2's Mail app.
This is an odd glitch, and I wonder if there could be a problem with how I've set up ths particular wifi access. I am going to go check this out at a Starbucks or some other place with free Wifi that I've used before, but if I could get any hints as to what settings to check, that would help me do some troubleshooting, I'd really appreciate it.
Dan

Hi Russa:
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Barry

Light leak problem

When I am using an application with a dark background, I see a yellow light comming in from the edges of the screen, especially the corners. I bought mine the first day so I would think that any glue would have evaporated by now. Any ideas?

Apple will never reply here, they don't even read this -- this is a user to user help forum.
Apple will almost never openly acknowledge problems like this (with very very rare exception, like the antenna last year, even then, they blamed the user for not knowing how to hold a phone).
Apple WILL correct the problem as production continues -- and the general concensus right now is that returning it will only net you the same probability of another one with the same problem. If your light leakage is really bad (as it seems to be for some people -- others indicate it is no different than their iPad Original, mine doesn't seem to have a problem at all) then it is probably worth trying to exchange it. If it's minimal, the current wisdom is to wait (the ipad has a one-year warranty) and have them swap it out a few months down the road once the problem has been corrected.
But don't wait for any kind of verbal acknowledgement from Apple.

Old problem returns

A few months ago i was experienceing constamt dissconects/recconects and suffered an extreme drop in speed,due to the dis/reconnects my speeds just wouldnt pick bak up
After 6 weeks of terriable internet my connection started to stabilise on its ,and i slowly recovered my initial speeds.This was bak in may and since then for the most part my connection had been decent,usually one day every week or so it start would constant dissconectys/recconects from around 10am-5pm then settle bak down again.Sometimes it would happen for an hour or 2 in the evenings aswell.But i could live with it.
But since friday its been constant again,During the day 9am-6pm my internet is pretty much unusable.In the evening the dissconnects arnt as bad,usually i get around 1hour bettween a dissconect,after midnight itas totally fine tho,no kicks at all
Thier is no noise on my line
can a mod help me pls,unreliable intwernet is useless to me
Connection information
Line state
Connected
Connection time
0 days, 0:13:52
Downstream
1,696 Kbps
Upstream
448 Kbps
ADSL settings
VPI/VCI
0/38
Type
PPPoA
Modulation
ITU-T G.992.1
Latency type
Interleaved
Noise margin (Down/Up)
11.1 dB / 16.0 dB
Line attenuation (Down/Up)
47.0 dB / 21.5 dB
Output power (Down/Up)
17.9 dBm / 11.7 dBm
Loss of Framing (Local)
24
Loss of Signal (Local)
2
Loss of Power (Local)
0
FEC Errors (Down/Up)
566 / 581
CRC Errors (Down/Up)
76 / N/A
HEC Errors (Down/Up)
N/A / 400
Error Seconds (Local)
25
^^those 14minsutes have problily been the longest i have been connected all day
also a little piece of my event log
1:03:32   1 Jan
xDSL linestate up (ITU-T G.992.1; downstream: 1696 kbit/s, upstream: 448 kbit/s; output Power Down: 17.9 dBm, Up: 11.7 dBm; line Attenuation Down: 47.0 dB, Up: 21.5 dB; snr Margin Down: 16.0 dB, Up: 11.1 dB)
01:03:19   1 Jan
xDSL linestate down
01:02:52   1 Jan
xDSL linestate up (ITU-T G.992.1; downstream: 1728 kbit/s, upstream: 448 kbit/s; output Power Down: 18.0 dBm, Up: 12.4 dBm; line Attenuation Down: 47.0 dB, Up: 22.0 dB; snr Margin Down: 6.0 dB, Up: 11.0 dB)
01:02:39   1 Jan
xDSL linestate down
01:01:00   1 Jan
PPP link up (Internet) [81.132.173.175]
01:01:00   1 Jan
PPP CHAP Chap receive success : authentication ok
01:01:00   1 Jan
PPP CHAP Receive challenge (rhost = ESR14.Edinburgh6)
01:00:58   1 Jan
xDSL linestate up (ITU-T G.992.1; downstream: 1600 kbit/s, upstream: 448 kbit/s; output Power Down: 18.0 dBm, Up: 12.4 dBm; line Attenuation Down: 47.0 dB, Up: 22.0 dB; snr Margin Down: 15.0 dB, Up: 11.2 dB)
14:39:40  27 Sep
xDSL linestate up (ITU-T G.992.1; downstream: 1696 kbit/s, upstream: 448 kbit/s; output Power Down: 18.1 dBm, Up: 13.0 dBm; line Attenuation Down: 47.0 dB, Up: 21.5 dB; snr Margin Down: 18.0 dB, Up: 11.0 dB)
14:39:27  27 Sep
xDSL linestate down
14:39:26  27 Sep
PPP link down (Internet) [81.131.108.211]
14:38:01  27 Sep
PPP link up (Internet) [81.131.108.211]
14:38:00  27 Sep
PPP CHAP Chap receive success : authentication ok
14:38:00  27 Sep
PPP CHAP Receive challenge (rhost = ESR14.Edinburgh6)
14:37:55  27 Sep
xDSL linestate up (ITU-T G.992.1; downstream: 1664 kbit/s, upstream: 448 kbit/s; output Power Down: 17.9 dBm, Up: 12.9 dBm; line Attenuation Down: 47.0 dB, Up: 21.5 dB; snr Margin Down: 17.0 dB, Up: 11.1 dB)
14:37:42  27 Sep
xDSL linestate down
14:37:29  27 Sep
PPP link down (Internet) [86.152.191.21]
14:37:11  27 Sep
xDSL linestate up (ITU-T G.992.1; downstream: 1600 kbit/s, upstream: 448 kbit/s; output Power Down: 17.9 dBm, Up: 11.9 dBm; line Attenuation Down: 47.0 dB, Up: 21.5 dB; snr Margin Down: 16.0 dB, Up: 11.1 dB)
14:36:58  27 Sep
xDSL linestate down
14:33:08  27 Sep
xDSL linestate up (ITU-T G.992.1; downstream: 1728 kbit/s, upstream: 448 kbit/s; output Power Down: 18.1 dBm, Up: 12.6 dBm; line Attenuation Down: 47.0 dB, Up: 21.5 dB; snr Margin Down: 18.0 dB, Up: 11.1 dB)
14:32:55  27 Sep
xDSL linestate down
14:31:47  27 Sep
xDSL linestate up (ITU-T G.992.1; downstream: 1760 kbit/s, upstream: 448 kbit/s; output Power Down: 18.1 dBm, Up: 11.9 dBm; line Attenuation Down: 47.0 dB, Up: 22.0 dB; snr Margin Down: 18.0 dB, Up: 11.0 dB)
14:31:34  27 Sep
xDSL linestate down
(im using HH2)

Just spotted you are having connect and disconnect problems with HH2.
Short answer:
Try this workaround; despite my own scepticism when first advised about it, this will fix both wifi and ethernet problems; the fact that your HH2 will not connect to your wifi and/or your ethernet connector is related to the HH2’s acknowledged problem with its DHCP table.
Access the Hub and set your wifi channel to non-automatic and select Channel 11.
Save the settings and re-boot the HomeHub and your PC.
Check your performance and that your wifi and/or ethernet connection is working normally, if this works you are OK, if not repeat the cycle and choose, in turn, Channels 9 and 1.
As your line speed is under-performing, it is now very important let the HH run very specifically for the training period uninterrupted (whether you believe that to be 72 hours, five days or ten days is for you to decide). I stress, do NOT reboot or disconnect the HH during that period to enable the exchange and it to establish the optimum speed for the line (during that period you may observe the HH resetting itself during renegotiation - that is normal).
Long answer:
See my post of22 Sept 2011:
BT Failure & Sanctioned Workaround for HomeHub V 2.0 A
Good Luck
+++###+++
If you feel the problem is solved, please don't forget to come back and confrm the fix or post any other solution. It helps those who really need it to judge whether it works or not.
Also, mark the thread solved

Acknowledgement problem

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