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Uplink/Downlink Frequencies in GSM/CDMA

devendra - 26th February 2011  (02:54 GMT)

what is downlink frequency of 1900 mhz.

srikanth ponnam - 18th January 2011  (16:46 GMT)

cdma
uplink 824-849mhz
downlink869-894mhz
carrier frq 1.25mhz

Anoop - 20th December 2010  (09:48 GMT)

What is the frequency used in CDMA

awii - 1st December 2010  (05:36 GMT)

hi everyone,can any one tell me why a site gets intermittent every now and then...even the technicans from erricssion cannot solve this issue and its exactly one month.
please assist with some hints

Umar Khan - 2nd August 2007  (09:18 GMT)

Thx alot Pix....! :)

Umar Khan - 1st August 2007  (10:22 GMT)

the main prorool used in NGN are
1. The SIP or H323 protocolfor signaling between two Softswitch.
2. The MGCP or H248 to control MGW.
3.The Sigtran in order to carry the SS7 message over the IP network.

Pix - 31st July 2007  (21:40 GMT)

Q1 --> one timeslot on the air interface for GSM carries up to 22.8 kbps of 'raw' data in GSMK modulation (voice or GPRS), and up to 55kbps in 8PSK modulation (EDGE).

one user can get up to n timeslots when transferring data (GPRS / EDGE), depending on the class of the mobile. It is usually 4 timeslots... so the data rate can reach 220kbps in excellent condition. In urban environment, one user can usually expect 180kbps (outside busy hours).

Q2 --> i don't know about NSS, sorry...

Umar Khan - 31st July 2007  (18:41 GMT)

hy fellows can any U please find answer of my simple question...?


Q---> Whats is the data rate of Um Air Interfacein of GSM...?

Q---> Which specific protocols used in NGN architecture..?

Many Thankx..!

paresh patel - 19th December 2006  (12:41 GMT)

hi chachu

There are two type of Band in Any Mobi1e company likeGSM 900 or GSM
1800 and both have the difference Frequency

in GSM 900
Uplink Freq -890 to 915 MHZ
Downlink Freq- 935 to 960 MHZ

and in GSM 1800
Uplink Freq -1710 to 1785MHz
Downlink Freq- 1805 to 1880MHZ

i hope u 'll get yr Answer.

Regards,
Paresh Patel.

iwan - 18th December 2006  (05:30 GMT)

Hi Friends

Can u help this ??
The site GSM 1800 has low SDSUC reasons Low Signal strength Uplink and TDR same reasons Low Signal strength Uplink :

MSTXPWR : 30
BSPWRB : 45
BSPWRT : 45
Layer Treshold : -85
ACCMIN : -90

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