OLT (mobile network)

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Mobile communication standards

GSM / UMTS (3GPP) Family

GSM (2G) GPRS EDGE (EGPRS) EDGE Evolution CSD HSCSD
UMTS (3G) HSPA HSDPA HSUPA HSPA+ UMTS-TDD TD-CDMA TD-SCDMA FOMA
UMTS Rev. 8 (Pre-4G) LTE HSOPA (Super 3G)


CDMA (3GPP2) Family

cdmaOne (2G)
CDMA2000 (3G) EV-DO
UMB (Pre-4G)


AMPS Family
AMPS (1G) TACS / ETACS
D-AMPS (2G)


Other Technologies
0G PTT MTS IMTS AMTS OLT MTD Autotel / PALM ARP
1G NMT Hicap CDPD Mobitex DataTAC
2G iDEN PDC CSD PHS WiDEN
Pre-4G iBurst HIPERMAN WiMAX WiBro GAN (UMA)


Channel Access Methods FDMA OFDMA TDMA SSMA CDMA


Frequency bands Cellular GSM UMTS PCS SMR

OLT (Norwegian for Offentlig Landmobil Telefoni, Public Land Mobile Telephony), was the first land mobile telephone network in Norway. It was established December 1, 1966, and continued until it was obsoleted by NMT in 1990. In 1981, there were 30,000 mobile subscribers, which at the time made this network the largest in the world.

The network operated in the 160 Mhz VHF band, using frequency modulation (FM) on 160-162 MHz for the mobile unit, and 168-170 MHz for the base station. Most mobile sets were semi-duplex, but some of the more expensive units were full duplex. Each subscriber was assigned a five digit phone number.

In 1976, the OLT system was extended to include UHF bands, incorporating MTD, and allowing international roaming within Scandinavian countries.