Summary of difficult problems in telecom complaints.

1. Jilin user 139043 15628 roamed to msc 1, and the user was called when he dialed the phone without prompting.

Check the user status idet in msc 1, which indicates that the location update of vlr has not been carried out periodically. Therefore, in idet state, operate MGSRE in msc 1: imsi = ~ ~; Force the user to update the location again, and the user will return to normal.

2. After paying the arrears in the business hall, the user still prompts the status of arrears when making a phone call, and cannot make a phone call.

Looking at the user's OBO-2 status in hlr, we can judge that the user's status in VLR is marked as obo- 1. After judging that boss modified the user fee, the middleware sent a signal to modify the obo-2 status of hlr, but hlr did not insert the user data into VLR to modify the user status. For user hgslr:msisdn=86~~, the user will return to normal after location update.

3. The user failed to send a complete SMS prompt.

When the user sends SMS MAP signaling, the parameters of TS22 will be judged in VLR. If the transmission fails, it should be marked as a TS22 error. For user HGSLR: MSISDN = 86 ~ ~, the user will return to normal after location update.

4. The user's SMS can be sent normally, but the other party can't receive it.

After contacting smc, check the sms-MO of the user. The SMS-MT process is normal, and the SMS submission protocol is 64. After receiving the SMS, it will be buried automatically, and the billing is normal. Most of them are sim card failures (it is estimated that the short message data format of sim card is damaged, resulting in 64 protocol transmission). Users are advised to replace their sim cards.

5. The user said that the recent international call prompt "Your phone has the right to make international calls, but you have no right to call this number".

Check the user data. Obo-4 is authorized by the International Director to test whether the international numbers provided by other numbers are normal. The user is found to be a scp vpmn user. After testing and deleting camel data, the user troubleshoots. It may be that the scp system restricts the dialing rights of users (it may be that users have recently joined vpmn users, and vpmn does not have long-term dialing rights).

6. The user complains that the mobile phone can answer the mobile phone normally, and calls from other operators all prompt "The subscriber you dialed cannot be connected temporarily".

Use Unicom to dial the user's mobile phone for TUP signaling tracking. After iam and acm messages, the failure of sending cfl and call failure calls should be caused by the individual actions of the mobile phone. The user's mobile phone is a Nokia mobile phone, and the mobile phone software version is faulty. It is recommended that users go to kf to upgrade and rewrite the software version, and troubleshoot after upgrading! The signaling process is as follows:

7. For CRBT users roaming to other places, visiting users and calling users will charge long-distance fees.

China Mobile adopts CRBT scheme triggered by call switching. CRBT users do not enjoy the same city exception. Because the node C in the province plays the ring back to the calling user in the visited place through an m-gmsc in the Hlr list, which occupies the long-distance trunk line, long-distance charges are charged.

8. A user's mobile phone can't receive messages sent by others.

Query the hlr parameters of the user, and the normal sign is ts2 1/22. hgmwp checks the message waiting data of the user, in which mce(sim card is full) is set, but the actual sim card of the user is not full, so the user can update the location again, and the fault has not been eliminated. Users are advised to replace the sim card and troubleshoot. After a few days, the fault still exists. Judge the problem of the user's mobile phone terminal, burn the sim card and modify the data format of the sim card. The fault disappeared after the user changed the mobile phone.

9. The user service data and hlr data of a Shenzhouhang are normal, but the prompt number is empty when dialing.

The user's mobile phone card was stopped for 3 months, and it should have been removed by scp, but the boss and hlr were not informed, resulting in data mismatch in three aspects.

10. The user was roaming in Mongolia and sent a short message to the Shandong user, which was sent at 8: 00 pm. The result was received by the other party at 13: 00 the next day.

Contact smsc to confirm that the user successfully submitted the short message to smsc at 8: 00 last night, and the number of short messages sent by smsc to the other party was 10, so that the other party received the short message normally. It is judged that the location signal of the other party is not good, which leads to the failure of sending sms-mt to the vlr every time. The opposite hlr message waits for the location until the vlr contacts the user to reset. The smsc continues the sms-mt process and repeats this process for 10 times, so the user can receive the SMS normally, so there is a problem of delay.

11.13945716990 user feedback139 the short message sent to him showed that it could not be sent, but other segments were sent normally.

Check that the user data is normal, and the test really failed to send 139. Contact Harbin SMS Center and say that other 139 users don't have this user's SMS -mo process. After the user sends it to the user through Harbin 139, it also prompts that it is not a local msc/vlr problem. Confirm that smsc restricts users, and continue to contact smsc for reply. The user sent more than 400 short messages in the previous 1 hour (the other party is 139), so the user and 139 are forbidden to send and receive short messages for 7 days.

12. When users go to the business hall, they are often called to tell them that their mobile phones are temporarily unavailable, and the same is true for changing their mobile phones.

Contact the user to inquire about the local network. The user said that the network was good and the signal was normal, which ruled out the situation of paging and paging response timeout caused by poor network signal. Because the user changed the mobile phone, the fault of the mobile phone terminal was eliminated. Therefore, considering the failure of sim, it may be that the sim works badly, resulting in poor contact or chip failure. After replacing the sim card for the user, the user returned to normal.

13. User A sent a short message to User B in the early morning, and User B was turned off at that time. However, user B turned on the phone within 24 hours and did not receive the short message from user A. ..

Query smsc to know that the SMS-MO of user A is normal and the SMS-MT process is normal. The user turned on the phone within 24 hours and did not receive the text message. It may be that the short message validity period of user B's mobile phone terminal is set too small, which leads to the automatic deletion of the short message after receiving it. (Note: The longest flow time from sms-mo to sms-mt is 24 hours). Users will return to normal after modifying the validity period of receiving.

14. The user marks the idle state in the vlr, and calls the user to remind him that he is busy and cannot be connected, and the paging process is normal.

Experience shows that when dialing, the user can't connect the action signaling behavior made for the mobile phone terminal for the time being, so it is suggested that the user change the card for the mobile phone operation test. It is also a prompt that the sim card is changed to another mobile phone, and the fault is the sim card problem. (This complaint comes from an online field. )

15. 13763693257 When the user dials this number, the mobile phone screen displays "Your balance is insufficient". However, the users of the enterprise boss system are not in arrears.

There is no arrears in checking the user information in hlr, and the mobile phone displays the phenomenon of "your balance is insufficient". The user makes judgment prompt directly on the mobile phone without going through the process of call establishment. This sim card is replaced by someone else's mobile phone, and the fault is still the same. It is judged that the sim card is locked. After the merchant replaces the sim card for the user, contact the user to return to normal. After judging that the sim card is locked, the unlocking may be unsuccessful, resulting in the invalidation of the sim card.

16. User1355522 1 41claimed that someone sent a text message at 21last night, and it was received at 8: 00 this morning, which was seriously delayed.

Hgmwp queries the message waiting bit of the user, and mce is in the yes state, which indicates that the storage state of the user's sim card is full, so there is a delay in receiving the short message. Contact the user. The user said that the sim card was never full, and the phone was flooded a few days ago. According to this analysis, it may be that the sim was burnt by the short circuit in the water, so the SMS was not received, and mce was set. Users are advised to replace the sim card.

17.045499236 Netcom users reported that their landline was bound to 1795 1. Recently, a mobile phone user made a foreign call, prompting that "you have no right to call this number", and it was normal to call foreign Netcom.

Let users dial signaling tracking as follows:

It can be seen from this signaling that the cnc gateway did send iai to Heihe msc 1. After receiving the anc message from cmcc, cnc sent clf to disconnect forward, which may be that cnc refused and played a recorded notice. Ask other local Netcom users in this section, and find this phenomenon, and judge it as cnc limit or fault.

18. User 1384567890 1 said that he received a call from 0 1384567890 1 yesterday, and talked for 30 seconds.

Inquiries about users' original bills are as follows:

It is found that the incoming call routing is Tietong's incoming call, which should be made for other provinces' Tietong telephones, and its number does not meet the specifications.

19. User 0456825207 1 Response After dialing 1795 104528579738, you cannot dial after the beep.

Contact the user and ask the user to dial the test. Signaling tracking is as follows:

I contacted the provincial technical office and learned that the recent failure of Netcom in Qishi caused the phone 1795 1 to fail to log in, which led to the call failure.

20, the user13845688181sends the multimedia message to 13845679 160, and the time is 06012617: 50.

Query the sending records of users in the MMS center. The user has indeed completed the submission process of MMS. The called user is not registered in the MMS center (the user's mobile terminal does not support MMS function), and should receive a 9002 SMS prompt. Because the called user turned off the phone and other reasons, the short message center deleted most of the short messages over time. Calling users have to send a large number of multimedia messages due to poisoning of mobile phone multimedia messages, which leads to complaints. (MMS virus is mainly aimed at Nokia mobile phones, and the user's mobile phone model is nokia6020).

The ppt of the group company about MMS virus is as follows

Note: There have been many complaints about nokia6020 sending MMS automatically in the province, all of which have been contacted for a period of time to send regular size MMS content and cannot be opened.

2 1. User 13845693888 reported that the short messages sent by others on their mobile phones were not received, and occasionally they were received with much delay.

It is normal to check the user's parameters in hlr, and it is still unacceptable to ask the user to update the location. Query the SMS center and find out the reason why the user failed to accept it. The prompt is "user terminal error". This phenomenon is mostly caused by user terminal software problems, so it is suggested that users change their machines to operate and test.

22. User 13555280049 The user said that his mobile phone can only answer and cannot make calls.

There is nothing unusual about querying the user's hlr information. When the user is prompted to dial, the mobile phone appears.

Additional business refused', suggesting that the user change the card to see if it is normal. Users go to the business hall to change the machine operation and troubleshoot. The call function of the mobile phone terminal is locked and returned to normal after unlocking.

23.13671971431Shanghai users roamed to Heihe area, found that their mobile phones could not make calls, and automatically returned to the idle state when calling, making the called party normal.

Clear the user's registration information in vlr, and let the user update the test again. The fault still exists. It is suggested that users put the sim card in another terminal, test it and find that they can talk. Prove that the complaint is a software problem or setting problem of the user's mobile phone (the user is a bird mobile phone).

24. 1384 6337097 dial 13846325470, and return automatically after dialing.

Clear the information registered by the caller in vlr, let the user update the location again, and call the user back to normal.

25. 138387864 1 When the caller dials, the phone screen prompts: "This service is not provided, please check the cli function", and the caller is called normally.

Contact the user, the mobile phone is Amoi model. Many Amoi users found this phenomenon on the Internet. For the problem of mobile phone software, users are advised to change the terminal for testing. (Other mobile phone cards are put in the mobile phone for troubleshooting. )

Cli is call line identification.

Find the following instructions on the Internet:

Send local number: Select on or off, that is, display or hide your number on the other party's mobile phone, which requires the support of the network. If the local network does not support the function of hiding numbers, the case of "This service is not provided, please check the CLI function" appears because "Send local numbers" is turned off, and the current network does not support hiding its own numbers, so when "Send local numbers" is selected as ".

After the user sets the function of not sending numbers, it returns to normal.

26. When the user 86 13895903499 reflects that his mobile phone is called, he will be prompted to stop due to arrears.

Check the user's hlr data and find that there is no arrears. The boss system pays the phone bill to the user, and the user still prompts the arrears. The normal notification process of arrears records is that gmsc addresses the subscriber hlr through gt and sends the sri message. If the user is in arrears, hlr returns the information message of sri-ack, and gmsc plays the recorded notice of the user's arrears. It is suspected that the user's hlr data is abnormal, and the account is cancelled for the user. After the account is opened, the user's fault remains, so the hlr problem is caused. The recording notification should be sent by vmsc after the user is paged and the user responds. It is judged as a problem of the user's mobile phone terminal. Users are advised to check their terminals, and they will return to normal after checking and modifying the terminals.

Note: the user's ms software problem sent an irregular signaling request, which caused the MSC to determine that the operation was blocked, corresponding to eos. The record notice corresponding to this eos is the "arrears record notice". After the user software is reset, the fault is restored.

27. All-netcom users use 1795 1 to dial 037 1628 12624, prompting that "the number you dialed does not exist".

Computer room telephone test17951+037162812624 also prompts for recording notice. It is normal not to add 1795 1. Contact Harbin Intelligent Network and dial normally with fixed telephone. Analyze and judge that the dt problem of the local office is a long-distance limit number.

Check the dt data as follows:

It is normal after modifying the bureau data. The following is the normal call flow DT.

28. The user 13845674440 always received a call from 0 1860.

Query the user's original bill as follows:

According to the analysis, the route is TB 1, which should be moved from the province. Consult the customer service center 1860, and the electronic bill fax service opened in Heihe and Jixi is 0 1860. The fax number left by the user is the mobile phone number, so this complaint has appeared.

29. The mobile phone with the user's mobile phone number has been pre-cancelled, and you can still use grps to access the Internet, resulting in corresponding telephone charges.

Check the data in the subscriber hlr. The pre-logout user is in arrears shutdown state, but there is still data in the pdp context data. Therefore, in the state of arrears, you can still use grps to surf the Internet. In the boss system, the user does not have gprs function, so when canceling the account, the boss did not send corresponding signaling to delete the pdp context data. The reason for this problem is that the business department informs the hlr of the network department to add gprs function to the user, which leads to the inconsistency between the data of boss and hlr.

Note: users have pdp context data and gprs lu process, and hlr will insert sub-sector data into SGSN, so users can use gprs function normally. If the user in the boss owes money. Boss will send hlr to modify obo obi and hgnsc to modify nam parameters. After hlr changes nam to 1, it will send map signaling to sgsn gprs cancel gprs lu, and the user's attachment information (including signing apn, etc.). ) will be cleared, so that users can't use the grps function and leave the network.

30. When calling a mobile user, I hear the recording prompt of "temporarily unable to connect", but the call flow is normal.

3 1. Harbin msc 1 Some users have reported that their mobile phones can hear the voice of the other users when they ring.

32. From March 24th to March 26th, 2006, the crosstalk problems reflected by users appeared on the third day.

33. Once mobile employees roam in Beijing, they can't use it, and there is no word mobile on their mobile phones, so they can only make emergency calls.

Check the subscriber subscription data in hlr, obr- 1, roaming in the province, and national roaming is not supported. After modifying the obr-2 status, the user still reports that the screen of the mobile phone does not move after being turned on, and it is only an emergency call. The Hlr side did not see the registered vlr id, indicating that the user did not update the location at all. This phenomenon should be that the user's sim card is broken. After the user came back from Beijing, he found that it was still useless. He changed the sim card and continued to use it. The reason why the sim card is broken may be that the user found that the mobile phone can't be used normally in Beijing, and changed the sim card several times. The sim card has been used for a long time, and the Sim card chip is broken.

34. Harbin user 13804553075 complained that she could not send short messages normally recently. When sending, he was prompted: Please try again later. The customer's mobile phone model is Southern Hi-Tech 66 1 1. Other mobile cards can be used normally in this mobile phone. The operation of changing the machine is still the same. Other mobile customers around him are normal. Customer's address is No.765433, Tielu Street, nangang district. (Contact billing, the staff told me that the data is normal).

Judging from the user's feedback, it should be that the sim short message module is out of order, so that when sending sm, the ms can't go to the sim card to complete sending sm normally, and the mobile phone appears "Please try again later". After replacing the sim card, the fault will be recovered.

35.65438+(BOSS verification)

The called subscriber is a color ring back tone subscriber, and the color ring back tone subscriber does not enjoy the special case of the same city, so the calling subscriber is charged long-distance+local call charges.

Note: The msc where the calling subscriber is located is not the mgmsc in the mgmsc list 1 of the called hlr, so the mgsmc in List 2 is selected to play the CRBT to the calling number. Because it occupies the relay circuit in the province, it earns long-distance fees.

36. 13644579 155 The customer complained that this machine is now used in Gannan Tibetan Autonomous Prefecture, Gansu Province, and it can make calls and calls normally, but it can receive short messages normally but cannot send them (the mobile phone screen shows that sending failed, please try again later). The customer calls the local number 1860 to explain to the customer that there is no problem with the local network. The number of the SMS center has also been checked. Through the intelligent network, it is found that the machine is in normal condition and there is no arrears. It also called to ask about the bill and found no problems. Now customers strongly urge the mobile company to find out the reason as soon as possible and resume the normal use of its SMS function.

The short message center inquires about any short messages submitted by users from April/kloc-0 to April 9. The mobile phone screen shows that sending failed, please try again later. Judge that the sim short message sending module is faulty, and suggest the user to replace the sim card.

37. 1393 6098898 The customer complained that it was possible to dial 0 1795 1 and direct dial before, but it was impossible to dial this number half a month ago. No matter which dialing method, you are prompted: "You have no right to use this system", but you still can't dial to transfer money. After testing, you can use other mobile phone cards to dial normally. The customer claims that this conference phone is a special number that can accommodate thousands of companies. After trying to dial this number, there is no manual service. It is suggested that the customer contact the customer service of the other party, but the customer determines that the other party has no right to make the corresponding settings, and strongly urges the mobile company to inquire about the reasons and reply as soon as possible.

After testing, the user's number segment can be used by other users, and the recorded notice "You have no right to use this system" does not come from the mobile company, so users should be blocked from using the other party's conference telephone system, and users are advised to find the conference system administrator.

Note: It is impossible for mobile network devices to call forbidden numbers. If there is a problem, it is the users of the whole segment.

38. 1394 5733009 A mobile employee calls another employee 13846367005, prompting to record the notice of "Arrears of Downtime". It is normal to call other mobile and Netcom at this time.

When the calling subscriber needs to change the sim card many times for work before, and the hlr status of the subscriber is not in arrears, and the call flow should be call setup, msc/vlr sends out a map odb message, and the corresponding eos is to record the arrears notice. The fault is judged as a temporary fault of the mobile phone software, and the call is normal after the switch operation, and the call is resumed after the sim is put back into the mobile phone. The model is Nokia6030.

39.13946147133 This evening 19: 00, the customer complained that MMS could not be sent at this number, and the other party could not receive it after sending it. It can be sent normally in the past, and the parameters have been checked correctly. The customer used a Samsung X648 mobile phone and switched to another one. Reason for sending the bill: The machine was unable to send MMS at around 19: 00 on the evening of the 9th. After sending, it replied "Information expired" message, but the other party could not receive it. It was able to send it normally in the past with correct parameters. The customer uses Samsung X648 mobile phone, but it is not easy to operate with other mobile phones. The customer said that this message was sent to many numbers, and now she wants to check the reasons and resume normal use.

Mmc inquired that the validity period of the MMS sent to 1367 1788239 on April 9 was set to 1 hour, and the other party's mobile phone did not read the MMS within 1 hour, so the MMS center automatically deleted the message after 1 hour. Because the user set up a status report, he received "information expired"

40. Users1394541123 and 13945479750 reported that roaming to Tianjin after April 5 could not be used normally. The user put the SIM card on Sony Ericsson K508 and Nokia K72 10, but there was no signal, but it was put on Nokia 165438.

4 1. 1364 4576888 customer complaint: sent a text message to the customer on April 6, 2006 13969 158939. At that time, the customer was in the power-off state, and the customer did not receive the SMS when it was turned on, nor was it received by the operator for testing. The customer is now in Jinan, Shandong Province, and may have received it before.

Query Shandong Mobile SMS Center. The reason why the user didn't receive the short message of 139 is "delete after expiration". It is recommended that the user set the validity period of 139 as the longest.

42. 13945062 153 reflects that the mobile phone can't be used 1795 1IP to call the fixed telephones in Zhengzhou, Nanyang, Luoyang and other Henan provinces. After dialing the number, the prompt is: this number is invalid. Customers can use it normally when they go to Central Street for testing, and they can also use it near Heida and Tongda, but it is in Anguo Street. Reasons for billing and handling suggestions: contact the customer and change the card in the business hall, but after changing the card, it is still impossible to call the fixed telephones in Henan Province, such as Nanyang and Luoyang, which are 20 meters below Anfaqiao (for example, 037 16884 1664, prompting that "this number is invalid"). The customer said that she could call normally before, and she went back to Henan once 1 month ago. After returning to this location, he could not call the fixed telephone in Henan Province normally. Other mobile users around you can dial normally in this position, but they still can't dial normally after changing their mobile phones and cards. In other areas, they can call the fixed telephone in Henan Province normally.

43. In recent times, users reflected in the business hall have received the same short message content from a user continuously.

There are two reasons for receiving the same text message several times in a row.

1.mo-Sms process: Some ms will automatically try to send SMS several times if they don't receive the message of forward sm ack sent back by smc. In this way, the receiver can receive the same short message content many times. In this case, only a limited number of identical messages will appear.

2.MT-SMS process: Due to the temporary failure of the terminal, the MS did not send a confirmation message to smc after receiving the message, so that smc thought that the user did not receive it and sent the message repeatedly. In this case, you will receive the same text message continuously for a period of time. In this case, the user subscription information in the vlr can be cleared, and the user can resume the lu process. After ms restarts for lu, the fault can be recovered!

44. 138450392 10 The customer complained that the mobile phone failed to send MMS in March and April, but it incurred GPRS traffic charges. The number of customers has not been reduced through detailed list inquiry, and the MMS that has not been successfully sent has not been inquired through the BOSS system. The customer said that the multimedia message was sent, but it was not sent successfully.

At present, the charge deduction and reduction mechanism of MMS is: after sending MMS, users generate corresponding gprs traffic, and then subtract the traffic * 1.3 from the call list. If the transmission of MMS fails due to network reasons or terminal software problems, the gprs traffic generated by the corresponding MMS will not be reduced.

Note: the characteristics of gprs traffic generated by sending MMS are upstream traffic > downstream traffic.

45. 1355 5586577 GSM users reported that all fixed-line telephones and PHS telephones couldn't get through last night 19:20-2 1:30, and the call prompt tone was busy, so the users didn't owe money.

The overload of the intelligent network equipment in the provincial company caused the VPMN users to be unable to answer the fixed line and PHS calls normally in a short time, and now it has returned to normal.

46. 1393 6278555 This user has been receiving the same short message from13159841333 from noon to afternoon on April 265438, with about 50 messages. According to the customer and 13 15933,

Inquired by the SMS Center, 13936278555 received 97 messages from 2 12: 0 1 7: 34 * *. Among them, 65 short messages are all 28 bytes long, and the remaining 32 short messages are all 0 bytes long. This problem is that the software of the mobile phone terminal is faulty, and users are sent short messages with the same content continuously.

47. Analysis of Heihe users' 5987-second long-distance call complaints.

48. 1350484930 1 customer complaints. On the afternoon of May 9th, at around 6: 30/kloc-0, the customer received five text messages on the fifth floor of No.9 Diantan Road, Xiangfang District 106045 189509350. The mobile phone shows that the transmission was successful, but the contents of the receiver are all. " .

The short messages sent by users to PHS users through SMS center are 138 bytes and 136 bytes respectively. The reason is that the sizes of Internet messages are different. Plmn stipulates that SMS is 70 bytes, and PHS stipulates that SMS is 48 bytes. After the mobile user submits it to the SMS center, the SMS will be sent to the SMS gateway of Netcom. Under normal circumstances, PHS smc will automatically divide the short message into two short messages and send them to PHS users, because the mobile short message exceeds 48 bytes. Because of the phs gsmc system, if the short message is not segmented, the phs terminal will not be able to correctly decode the long short message content, so that "?" You will see it on the mobile phone terminal. Waiting for the garbled code.

49. 13904608 165 reflects that this machine has not received any short messages since today 1 1.

Inquired by the SMS center: May 2006 1 1: 02, the user 13796 153085 sent a message for it, and after trying to send it six times in the SMS center, it was sent at 20: 49 on May 14, 2006. Msic terminal error is a normal phenomenon of the terminal, such as poor compatibility between the terminal and the card. This kind of error is unpredictable and belongs to temporary terminal error.

50. 1380 4587927 The customer complained that this machine often received short messages from1060451896 92817. The customer said that it was sent by his friend around 1: 00 on the afternoon of May 2, but the customer started sending it on May 66.

Inquired by the SMS center, the user 896928 1 sent a SMS to the user 13804587927 on 13: 24, but the SMS transmission failed due to the msic terminal failure.

I received 20 short messages continuously, indicating that smc gave me a failed msic terminal failure in the forward sm, but the user ME still received the short messages normally. After the failure, it was sent 20 times in a row, and the last short message of the user was successfully received.

5 1. Recently, many mobile users reported that the connection rate was low when they dialed the fixed line of Bei 'an private network, and they kept hearing the recorded notice of "temporarily unable to connect".

52. 1355 5295200 users receive MMS, and deduct the grps traffic fee.

Online query user bills are as follows:

1355 52952000081355 5295200 Free MMS reception 2006/08/15/kloc-0: 56: 45 27749.00 0.00.0.00.

181355 5295200cmwap 2006/08/1509: 42: 0127.000 20 seconds non-roaming Heihe river.

The MMS center will send the generated MMS bill to the boss. When the boss sees the MMS bill, he should reduce the traffic according to 1.3 times of the grps traffic to ensure that the gprs traffic is not charged. The user's traffic has not decreased, and the fault lies with the boss, not with the MMS center.