What is difference between ultra and flexi bts?

Answer 1

Ultra BTS can support max. of 12 TRx (trancievers), while Flexi can support max. of 24 TRx.

Ultrea has drawback that it has all Pin connections on back side, if any of the Pin of a particular slot is damaged then that slot is useless, while in flexi all connections are on front side so it is easy to install every equipment.

As an operator wants to cover maximum area he will use flexi.

you can say ultra a bts of old times.

so, it is the difference my dear.

however, one TRx card supports 8 time slots i.e. max of 8 users, but not practically. It will support max. of 7 callers. Capacity in terms of users can be increased using Half rate, i.e. A TRx will support approximately 14-15 users at half rate transmission, half rate is used during bysy hours, i.e. on one time slot 2 user will send their data/speech, with a half rate of 5.6 kbps, but at half rate voice quality is not very good. Simply one time slot will be assigned to two users in Half rate. So both of them(Ultra & Flexi) support equal no. of users if having equal no. of TRx.

Answer 2

MAIN ARCHTECTURAL DIFFERENCE BETWEEN ULTRA & FLEXI BTS

Ethernet Replacing former DBUS and FBUS

Network Processor ABIS & BTS O&M

Single DSP in DTRX Handling:

•DSP

•TRX O&M

•Telecom Signaling.

•Two Carrier.

SW Storage only at BTS level (in system module) and SW DL to unit at every boot-up.

Transmitter coherent combining support in DTRX.

TRX loop only at sector in DTRX.

TRX loop only at sector level.

Power on/off switching at unit level (from power distribution module).