Masalah cdma dial-up

baru2 ni saya dapat guna telekom cdma (kat rumah takda landline) utk dial internet.
ikut telekom punya buku manual tu, aku dah setkan semuanya:
OS aku: WINXP Pro
modem driver: Standard 19200 bps Modem (COM1)
Maximum port speed: 115200
Init string: AT+CMUX=F,1;AT&C2+CRM=135
COM1 dah set baudrate: 115200
kat cdma tu pon dah set kan baudrate 115200
semasa connect internet pun dapat connection speed 115.2kbps

tapi masalahnya, semasa aku surfing atau d/l tu, aku rasa connection dia lebih slow dari dialup biasa. kat opis aku (landline) cuma bleh dapat connect 46kbps, tapi surfing lebih laju.

Ada sesape bleh bagi komen tak? tia.
---modem log.txt---
05-31-2004 19:12:07.046 - File: C:\WINDOWS\System32\tapisrv.dll, Version 5.1.2600   
05-31-2004 19:12:07.046 - File: C:\WINDOWS\System32\unimdm.tsp, Version 5.1.2600   
05-31-2004 19:12:07.062 - File: C:\WINDOWS\System32\unimdmat.dll, Version 5.1.2600   
05-31-2004 19:12:07.062 - File: C:\WINDOWS\System32\uniplat.dll, Version 5.1.2600   
05-31-2004 19:12:07.062 - File: C:\WINDOWS\System32\drivers\modem.sys, Version 5.1.2600   
05-31-2004 19:12:07.062 - File: C:\WINDOWS\System32\modemui.dll, Version 5.1.2600   
05-31-2004 19:12:07.109 - File: C:\WINDOWS\System32\mdminst.dll, Version 5.1.2600   
05-31-2004 19:12:07.109 - Modem type: Standard 19200 bps Modem
05-31-2004 19:12:07.109 - Modem inf path: mdmgen.inf
05-31-2004 19:12:07.109 - Modem inf section: Gen192
05-31-2004 19:12:07.109 - Matching hardware ID: mdmgen192
05-31-2004 19:12:07.125 - 115200,8,N,1, ctsfl=1, rtsctl=2
05-31-2004 19:12:07.125 - Initializing modem.
05-31-2004 19:12:07.125 - CD is high while initializing modem.
05-31-2004 19:12:07.140 - Send: AT<cr>
05-31-2004 19:12:07.140 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:12:07.140 - Interpreted response: OK
05-31-2004 19:12:07.156 - Send: ATE0V1<cr>
05-31-2004 19:12:07.156 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:12:07.156 - Interpreted response: OK
05-31-2004 19:12:07.171 - Send: AT<cr>
05-31-2004 19:12:07.171 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:12:07.171 - Interpreted response: OK
05-31-2004 19:12:07.171 - Sending user initialization commands.
05-31-2004 19:12:07.187 - Send: AT+CMUX=F,1;AT&C2+CRM=135<cr>
05-31-2004 19:12:07.218 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:12:07.218 - Interpreted response: OK
05-31-2004 19:12:07.218 - Waiting for a call.
05-31-2004 19:12:07.234 - Send: ATS0=0<cr>
05-31-2004 19:12:07.234 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:12:07.234 - Interpreted response: OK
05-31-2004 19:12:07.265 - 115200,8,N,1, ctsfl=1, rtsctl=2
05-31-2004 19:12:07.265 - Initializing modem.
05-31-2004 19:12:07.265 - CD is high while initializing modem.
05-31-2004 19:12:07.281 - Send: AT<cr>
05-31-2004 19:12:07.281 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:12:07.281 - Interpreted response: OK
05-31-2004 19:12:07.296 - Send: ATE0V1<cr>
05-31-2004 19:12:07.296 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:12:07.296 - Interpreted response: OK
05-31-2004 19:12:07.312 - Send: AT<cr>
05-31-2004 19:12:07.312 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:12:07.312 - Interpreted response: OK
05-31-2004 19:12:07.312 - Sending user initialization commands.
05-31-2004 19:12:07.328 - Send: AT+CMUX=F,1;AT&C2+CRM=135<cr>
05-31-2004 19:12:07.359 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:12:07.359 - Interpreted response: OK
05-31-2004 19:12:07.359 - Dialing.
05-31-2004 19:12:07.375 - Send: ATDT######<cr>
05-31-2004 19:12:07.375 - Recv: <cr><lf>CONNECT<cr><lf>
05-31-2004 19:12:07.375 - Interpreted response: Connect
05-31-2004 19:12:07.375 - Connection established at 115200bps.
05-31-2004 19:12:07.375 - Error-control off or unknown.
05-31-2004 19:12:07.375 - Data compression off or unknown.
05-31-2004 19:12:37.390 - Read: Total: 13928, Per/Sec: 463, Written: Total: 2736, Per/Sec: 89
05-31-2004 19:14:37.390 - Read: Total: 215850, Per/Sec: 1682, Written: Total: 42870, Per/Sec: 334
05-31-2004 19:16:37.390 - Read: Total: 276756, Per/Sec: 507, Written: Total: 62290, Per/Sec: 161
05-31-2004 19:18:37.390 - Read: Total: 296543, Per/Sec: 164, Written: Total: 65862, Per/Sec: 29
05-31-2004 19:20:37.390 - Read: Total: 299253, Per/Sec: 22, Written: Total: 67670, Per/Sec: 15
05-31-2004 19:22:37.390 - Read: Total: 299253, Per/Sec: 0, Written: Total: 67670, Per/Sec: 0
05-31-2004 19:24:37.390 - Read: Total: 373906, Per/Sec: 622, Written: Total: 76818, Per/Sec: 76
05-31-2004 19:26:37.390 - Read: Total: 468737, Per/Sec: 790, Written: Total: 91754, Per/Sec: 124
05-31-2004 19:28:37.390 - Read: Total: 569851, Per/Sec: 842, Written: Total: 108034, Per/Sec: 135
05-31-2004 19:30:37.390 - Read: Total: 783943, Per/Sec: 1784, Written: Total: 146157, Per/Sec: 317
05-31-2004 19:32:37.390 - Read: Total: 808675, Per/Sec: 206, Written: Total: 150128, Per/Sec: 33
05-31-2004 19:34:37.390 - Read: Total: 921820, Per/Sec: 942, Written: Total: 165827, Per/Sec: 130
05-31-2004 19:36:37.390 - Read: Total: 1110794, Per/Sec: 1574, Written: Total: 185910, Per/Sec: 167
05-31-2004 19:36:58.296 - Hanging up the modem.
05-31-2004 19:36:58.296 - Hardware hangup by lowering DTR.
05-31-2004 19:36:58.296 - Detected CD dropped from lowering DTR
05-31-2004 19:36:59.296 - Timed out waiting for response from modem
05-31-2004 19:36:59.312 - Send: ATH<cr>
05-31-2004 19:36:59.484 - Recv: ATH<cr>
05-31-2004 19:36:59.484 - Command Echo
05-31-2004 19:36:59.484 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:36:59.484 - Interpreted response: OK
05-31-2004 19:36:59.484 - 115200,8,N,1, ctsfl=1, rtsctl=2
05-31-2004 19:36:59.484 - Initializing modem.
05-31-2004 19:36:59.484 - CD is high while initializing modem.
05-31-2004 19:36:59.500 - Send: AT<cr>
05-31-2004 19:36:59.500 - Recv: AT<cr>
05-31-2004 19:36:59.500 - Command Echo
05-31-2004 19:36:59.500 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:36:59.500 - Interpreted response: OK
05-31-2004 19:36:59.515 - Send: ATE0V1<cr>
05-31-2004 19:36:59.515 - Recv: ATE0V1<cr>
05-31-2004 19:36:59.515 - Command Echo
05-31-2004 19:36:59.515 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:36:59.515 - Interpreted response: OK
05-31-2004 19:36:59.531 - Send: AT<cr>
05-31-2004 19:36:59.531 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:36:59.531 - Interpreted response: OK
05-31-2004 19:36:59.531 - Sending user initialization commands.
05-31-2004 19:36:59.546 - Send: AT+CMUX=F,1;AT&C2+CRM=135<cr>
05-31-2004 19:36:59.578 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:36:59.578 - Interpreted response: OK
05-31-2004 19:36:59.578 - Waiting for a call.
05-31-2004 19:36:59.593 - Send: ATS0=0<cr>
05-31-2004 19:36:59.593 - Recv: <cr><lf>OK<cr><lf>
05-31-2004 19:36:59.593 - Interpreted response: OK
05-31-2004 19:36:59.593 - Session Statistics:
05-31-2004 19:36:59.593 -                Reads : 40 bytes
05-31-2004 19:36:59.593 -                Writes: 46 bytes

Remy_3D

ur modem speed is 19200 bps. Even dia cakap connected at 115200bps, tapi connection tu cuma dari modem ke pc, bukan dari modem ke modem ISP.

Remy_3D

kalau tak caya cuba hang set COM1 dah set baudrate kepada speed lain.....

defeduck

Memang speed CDMA ni 19200 bps jer. Confirm. Dulu pernah guna CDMA jugak.

check setting cdma- www.tmmsupport.net.my

cdma nye modem speed kena letak 19200bps...ni fixed, jgn memandai tukar kpd lain konon slow sgt ker etc...

tapi skrg ni memang ada prob utk cdma error 629,619....
cdma boleh buat call, coz telekom bg priority utk cust buat call....so kalu ramai yg buat call, line utk buat connection akan tinggal sikit, so mungkin congest...tapi kalu refer ngan telekom memang telekom cakap line cdma ok...blm dpt feedback dr telekom lagi...progress utk prob ni...

modem utk cdma ni 64kb....suppose lagi laju dr dial up 1515...

harap bersabar ngan cdma ni...

oic... tima kasih

azaleena

cdma allows data rate up to 64kbps .. it is a multiple of channels. But the channels will be prioritze to voice calls. Masa tak de org buat call, u can enjoy the full rate. tapi, bila ada org buat call, one of the channel will be dropped. bila dah voice call hang up, the system will automatically add up another channel to u.

jadi, ur data rate will be fluctuate from 9.6kbps - 64kbps depending on voice calls.

azaleena

lagi satu,
memang the connection of cdma to tmnet is very much faster kalau dial up since from the cdma system has direct connection to tmnet server. manakala dial up, it's via node dan kemudian baru diconnect to server tmnet.

kalau u all notice, the authentication is very fast since cdma ada proxy server for authentication ...

[ Last edited by azaleena on 2-6-2004 at 06:03 PM ]

bzzts

Originally posted by azaleena at 2-6-2004 05:54 PM:
cdma allows data rate up to 64kbps .. it is a multiple of channels. But the channels will be prioritze to voice calls. Masa tak de org buat call, u can enjoy the full rate. tapi, bila ada org buat  ...

lebih kurang macam "network switch" la yek? kalo 10port, 10pC donlod kazaa maunya lembab connection tuh.

so, kalu cdma 1 area, 10 user buat fon call dalam 1 area tuh , drop la speed dia... gitu?

azaleena

Originally posted by bzzts at 2004-6-2 06:49 PM:

lebih kurang macam "network switch" la yek? kalo 10port, 10pC donlod kazaa maunya lembab connection tuh.

so, kalu cdma 1 area, 10 user buat fon call dalam 1 area tuh , drop la speed  ...

lebih kurang gitu la ...

simple calculation ... kalau base station ada 10 channel & ada 10 user, and u one of them yg guna data. u'll get the minimum speed 9.6kbps. kalau ada satu call dah hang up, u akan dpt additional satu lagi channel ...

meh nak cite sket pasal cdma nih ..
firstly, we have to understand, cdma is a cellular technology. It uses Base station and frequency to serve customers. In one base station, ada 3 sector. in each sector ada about 22 channels allocated for simultaneous calls for each frequency band. In some areas, only one frequency band allocated whereas in a more populated areas, second frequency band has been made available. So, total, at any one time, one sector can serve 22 - 44 calls simultaneously.

What makes this cdma beauty, the limiting factor is the noise level. Each channel is a noise to another channel. Selagi, the noise level is still can be tolerate, there's possibility that more simultaneous calls can be served. The figure 22 per sector per frequency band is just the number for easy calculation.

kat cdma punya monitor tu semasa dialup aku tengok always...PPP @9.6

kat cdma punya monitor tu semasa dialup aku tengok always...PPP @9.6

H猷L鰃頧

9600bps ke?

sabau jela,

tapi sebenarnya tak lah slow sangat... cume slow skit dari 56k dial-up.

Sarah_Radzi

Originally posted by azaleena at Wed 02-Jun-2004 13:41:

What makes this cdma beauty, the limiting factor is the noise level. Each channel is a noise to another channel. Selagi, the noise level is still can be tolerate, there's possibility that more simultaneous calls can be served. The figure 22 per sector per frequency band is just the number for easy calculation

actually, noise bukan main component yang tentukan speed/rate, tapi lebih kepada panjang spreading code ..

CDMA = code division multiple access..
simple case

setiap channel/org  ade code ... code tu panjang dia L .

kalau L=8 .... 8 channel / user serentak. (L integer dalam bentuk 2^n)

komputer u biler nak hantar data .. dia akan sediakan simbol ..
sampai kat cdma ni ... dia akan pecahkan satu symbol kepada L symbol yang lebih kecik yang dipanggil chip.. maksudnya ... dalam masa satu data sebenar .. kena hantar L data kecik ..
cuma masalahnya ... modem tu takleh hantar lebih dari 64k "data kecik" sesaat
jadi ..
kalau nak system laju .. kena kecikkan L ... tapi biler kecikkan L ... org yang bleh guna serentak plak kurang .. ataupun jumlah channel  kurang ..
nak system banyak user, kena panjangkan L ... tapi slowkan system

jadi ..

utk implement cdma ni ..
* samada ubah panjang code setiap masa mengikut keperluan (macam UMTS/3G), ataupun
* fixkan panjang code .. fix channel  number .. kalau tak ramai org , kasi org yang yang online channel yang tak digunakan ... sama macam system ISDN yang ada citer pasal channel B lah ape tah ..


kalau modem CDMA tu guna adaptive modulation .. tu baru bergantung kepada noise ... iaitu .. ubah berapa bit diperlukan utk buat satu data symbol sblm data symbol tu dicincang halus jadi chip ..

azaleena

Originally posted by Mats01 at 2004-6-2 09:36 PM:
kat cdma punya monitor tu semasa dialup aku tengok always...PPP @9.6

memang pada skrin FWT CDMA sentiasa akan menunjukkan PPP@9.6 <-- jika menggunakan set DOWTEL. Walau bagaimanapun, speed yg sebenar tidak ditunjukkan pada skrin tersebut, kena tengok pada PC.

azaleena

Originally posted by Sarah_Radzi at 2004-6-3 04:10 AM:


actually, noise bukan main component yang tentukan speed/rate, tapi lebih kepada panjang spreading code ..

CDMA = code division multiple access..
simple case

setiap channel/org  ade co ...

Sarah,
noise is plays an important role in CDMA esp over the air utk menentukan how many channels can be used for communication.

Memang what u said is right, tak mempengaruhi speed/rate.

memang pada skrin FWT CDMA sentiasa akan menunjukkan PPP@9.6 <-- jika menggunakan set DOWTEL. Walau bagaimanapun, speed yg sebenar tidak ditunjukkan pada skrin tersebut, kena tengok pada PC.

kalau tengok pada pc... 115.2kbps lah pulak. huhuhu...
aku memang guna set DOWTEL tuh.