Alternate line service
Encyclopedia
Alternate Line service is a GSM
feature for supporting two different phone numbers on the same mobile device.
The AlternateLineService (ALS) was introduced as additional service with the former "PCS-1800" (now better known as GSM1800) standard, in a specification called "CPHS". This is the reason that GSM900 singleband phones do not support this feature, while the corresponding GSM1800 version often does (e.g. Ericsson GH-337 vs. PH-337). Later it became part of the GSM-Specs and was adapted even by some traditional GSM900 providers, e.g. A1(AT)and orange also in AT.
This service does not work currently with android devices.
Global System for Mobile Communications
GSM , is a standard set developed by the European Telecommunications Standards Institute to describe technologies for second generation digital cellular networks...
feature for supporting two different phone numbers on the same mobile device.
The AlternateLineService (ALS) was introduced as additional service with the former "PCS-1800" (now better known as GSM1800) standard, in a specification called "CPHS". This is the reason that GSM900 singleband phones do not support this feature, while the corresponding GSM1800 version often does (e.g. Ericsson GH-337 vs. PH-337). Later it became part of the GSM-Specs and was adapted even by some traditional GSM900 providers, e.g. A1(AT)and orange also in AT.
This service does not work currently with android devices.
Support to date
- Supported by many, but not all, GSM mobile devices.
- Some, but not all, mobile devices support different ring toneRing toneA ringtone or ring tone is the sound made by a telephone to indicate an incoming call or text message. Not literally a tone, the term is most often used today to refer to customizable sounds used on mobile phones.-Background:...
s for different lines. - Supported by many, but not all, GSM service providers.