Standard GSM phone calls do not use WiFi or MAC addresses, they using layer1 or layer2 or layer7 circuit switching?

VoLTE/VoIP are completely different protocols that rely on existing packet-switched upto layer7?

call setup involves all layers: one, two, three, four and five at least. wired phones, e.g., ISDN, are circuit switched. GSM is circuit switched, UMTS uses circuit-switched protocol stack for calls. LTE is AFAIK packet switched. Whether wireless part is circuit-switched or not I honestly do not know.

You just differentiate me between GSM and VoLTE/VoIP phone call? GSM uses circuit switching at which layer? And it is connection oriented or not?And GSM uses IP address or not? And for VoLTE/VoIP uses packet switching which works layer7 and uses packet switching or not?

VoIP is a set of protocols that work on top of IP protocol. VoLTE I do not know.

GSM phone doesn't support internet, so how it works like upto layer7? It doesn't have any application as well as port and IP address, so how it works upto layer7 during connection establishment?

OSI is a model for networks in general, not only TCP/IP protocol stack. GSM has its set of layers, which has nothing to do with IP. Again, explaining them takes a book, I can't do it in comments.

I don't want understand anything, You just confirm me GSM phone doesn't have IP address and they don't use IP address during connection set up?

And you confirm me that 4g phone uses IP address and port number during connection establishment?

Cell phone uses phone number and some other numbers that are stored on the sim card numbers in order to connect to the network. I think it is true for LTE too. In GSM, phone calls use phone numbers. But if your GSM phone has Internet connection (e.g., GPRS) they do have IP numbers, which they get after they connect to the network.... I cannot say about LTE, i think so.

I can't asnwer this question with yes or no. The major design issue of mobile networks are that mobile phones are (surprise) mobile, and neither IP not phone network are capable at handling mobile participants. The way of handling it is more complicated that yes or no answer to this question.

One thing don't understand, how layer2 is packet switched for example Wi-Fi? Packetization is happening in layer3, how layer2 is packetization? What is mean layer2 packetization?

hm ... well... it is switched is your wi-fi box works as an ethernet switch/bridge ;) in a circuit-switched network you will get dedicated resources for the duration of your circuit, e.g., in a phone call you get a dedicated channel with certain bandwidth for the duration of the call. This channel is not dependent on its usage. So, a very high level explanation: in GSM network, after call setup you get assigned a carrier (frequency) and time slot (look up TDMA) on that frequency, and your phone sends your audio frames on that frequency every time slot. This is dedicated resource.

But packetization don't understand, what is layer2 packetization? You just saying reservation?

in wi-fi there are two modes. In first mode, when you have a packet you ask a base station if you can send a packet and then sends this packet. this happens for every packet. there is no dedicated resource, you just try to occupy the channel when you need to send something. In second mode you will get a semi-dedicated resource when the base station kinda asks you at specific times if you want to send a packet, and if you don't it allocates this time to someone else. So again, it can reallocate resoures if they are not used.

But this is QoS and this has elements that are typical for circuit switching.

That means first phase connection setup and resources reservation. And second phase data transfer. And third phase connection termination?Am I correct?

layer 2 has frames, which have maximal sizes. this is true for any network that transmits digital data. circuit-switched networks have fixed-sized frames as well.

basically yes - call setup, actuall call, and call termination

""basically yes - call setup, actuall call, and call termination ""--- in your above comments WiFi mode2 which is semi dedicated or dedicated?

it is called point coordination functions (if i remember correctly). mode 1 is distributed coordination function. point is semi-dedicated.

In your above comments regarding two WiFi modes, you are talking about TCP/IP protocol? That means internet? Not mobile network?

TCP/IP protocol suite is more or less a synonum to the Internet, which is per-definition a network which uses TCP/IP protocol suite, and IP in particular.