In the in-universe chronology, no; Discovery is the earliest known example of hologrammatic communications in the Star Trek universe.

In the production history, holograms were used for communication a couple of times on Deep Space Nine; if I recall correctly, the first pair we see were installed on the Defiant and the USS Malinche in season 5's "For the Uniform":

Sisko: Is the new holo-communicator ready?

 

Kira: The Chief's had it online for six hours now. I think he's eager to have someone give it a try.

 

Sisko: Always like to please the Chief. Open a channel to Captain Sanders on the Malinche.

 

^{Deep Space Nine Season 5 Episode 11: "For the Uniform"}

It got used a handful of times in future episodes, but it never really caught on and was quietly dropped.

In the in-universe chronology, no; Discovery is the earliest known example of hologrammatic communications in the Star Trek universe.

In the production history, holograms were used for communication a couple of times on Deep Space Nine; if I recall correctly, the first pair we see were installed on the Defiant and the USS Malinche in season 5's "For the Uniform":

Sisko: Is the new holo-communicator ready?

Kira: The Chief's had it online for six hours now. I think he's eager to have someone give it a try.

Sisko: Always like to please the Chief. Open a channel to Captain Sanders on the Malinche.

^{Deep Space Nine Season 5 Episode 11: "For the Uniform"}

It got used a handful of times in future episodes, but it never really caught on and was quietly dropped.

In the in-universe chronology, no; Discovery is the earliest example of hologrammatic communications in the Star Trek universe.

In the production history, holograms were used for communication a couple of times on Deep Space Nine; if I recall correctly, the first pair we see were installed on the Defiant and the USS Malinche in season 5's "For the Uniform":

Sisko: Is the new holo-communicator ready?

Kira: The Chief's had it online for six hours now. I think he's eager to have someone give it a try.

Sisko: Always like to please the Chief. Open a channel to Captain Sanders on the Malinche.

^{Deep Space Nine Season 5 Episode 11: "For the Uniform"}

In the in-universe chronology, no; Discovery is the earliest known example of hologrammatic communications in the Star Trek universe.

In the production history, holograms were used for communication a couple of times on Deep Space Nine; if I recall correctly, the first pair we see were installed on the Defiant and the USS Malinche in season 5's "For the Uniform":

Sisko: Is the new holo-communicator ready?

Kira: The Chief's had it online for six hours now. I think he's eager to have someone give it a try.

Sisko: Always like to please the Chief. Open a channel to Captain Sanders on the Malinche.

^{Deep Space Nine Season 5 Episode 11: "For the Uniform"}

It got used a handful of times in future episodes, but it never really caught on and was quietly dropped.