Can CDMA support analog handoff back to digital?

Unfortunately, CDMA only supports handing off from Digital to Analog, but it cannot do Analog to Digital. Only TDMA can do this.

 

I'm a little confused. Are you saying that if I'm traveling somewhere and my CDMA phone goes from digital to analog that it won't come back to digital automatically when I return to an area that has a digital signal? If I'm totally off base please inform me.

 

It won't switch back to digital *while you're on a call*.

 

Thank you, tylerdurden. Now it makes sense. Do any of the technologies do this (GSM, TDMA, etc)?

 

As I stated, only TDMA can do this as it is the only technology that can handoff both ways between digital and analog during the same call. CDMA has a one-way inter-network handoff because it will handoff from digital to analog during the same call. However, when that happens, that call will end in analog even if you return to a digital area. As soon as your call ends, the phone will switch back to digital CDMA. Once again, only TDMA can handoff both ways between digital and analog during the same call. GSM doesn't even support analog.

 

Then why can my phone receive both a analog and digital CDMA signal then... If they cannot be switched then why can I have the option... The tracfone V120C phone has a option of using both digital and analog CDMA???

I have a option that allows my to switch on and off analog CDMA on this phone...

 

You responded to a near 6 year old post???

 

I thought analog service is dead now so it's kind of pointless to discuss. When I saw this thread I knew it had to be way old. CDMA and analog to my knowledge was never capable of any handoffs to each other.

 

Yes, this is not really relevant question anymore as most of the analog service has been turned off in the US. I'd imagine even if you were in an area that still had analog service that the network may no longer support handoffs between digital and analog. That call will start and end (or drop) using whatever network the phone was using at the time the call was connected.

-Jay

 

Just to clear this up, cdma systems will hand off to analog if it is still available. I experienced this frequently before the digital buildout was finished several years ago in the area where I live. Analog did not hand off to cdma.

 

There are phones that still support analog? I havent had an analog capable phone in at least 3 years.

 

The Moto W315 is still being sold by Alltel. It has analog capability.