Siman 592
Presented here for study, not as a practical ruling. The Shulchan Aruch rules by Sephardi custom, the Rema's glosses by Ashkenazi custom, and the Kitzur follows Ashkenazi custom. For a practical question, ask your rabbi.
א מַחֲזִיר שְׁלִיחַ צִבּוּר הַתְּפִלָּה, וְתוֹקְעִין עַל סֵדֶר הַבְּרָכוֹת לְמַלְכֻיּוֹת תשר"ת פַּעַם אַחַת, וּלְזִכְרוֹנוֹת תש"ת, וּלְשׁוֹפָרוֹת תר"ת; וְעַכְשָׁו נוֹהֲגִים לִתְקֹעַ לְמַלְכֻיּוֹת תשר"ת שְׁלֹשָׁה פְּעָמִים, לְזִכְרוֹנוֹת תש"ת שְׁלֹשָׁה פְּעָמִים, וּלְשׁוֹפָרוֹת תר"ת שְׁלֹשָׁה פְּעָמִים. הַגָּה: וְיֵשׁ אוֹמְרִים שֶׁתּוֹקְעִים תשר"ת לְמַלְכֻיוֹת פַּעַם אַחַת, וְכֵן לְזִכְרוֹנוֹת, וְכֵן לְשׁוֹפָרוֹת (טוּר בְּשֵׁם רַבֵּנוּ תָּם וּמִנְהָגִים), וְכֵן הַמִּנְהָג בִּמְדִינוֹת אֵלּוּ. וְנָהֲגוּ לוֹמַר כָּל פַּעַם אַחַר שֶׁתָּקְעוּ: הַיּוֹם הֲרַת עוֹלָם, וַאֲרֶשֶׁת (מַהֲרִי"ל); וַאֲפִלּוּ בְּשַׁבָּת שֶׁאֵין תּוֹקְעִין, אוֹמְרִים: הַיּוֹם הֲרַת עוֹלָם, אֲבָל לֹא אֲרֶשֶׁת (מִנְהָגִים).
1 The Mussaf Prayer (said) in a loud voice and the order of the Shofar Blasts, and in it is 4 paragraphs. The Chazan repeats the (silent) prayer. And we blow on the order of the blessings: for Kings TSR"T once, for Remembrances TS"T and for Shofars TR"T. And now we have the custom to blow for Kings TSR"T three times, for Remembrances TS"T three times and for Shofars TR"T three times. Rema: And there are that say we blow TSR"T for Kings once and also for Remembrances and also for Shofros [Tur quoting Rabbeinu Tam and Minhagim]. And so is the custom in these provinces. Also, it is a custom to say every time after that Tokea blasted (the prayers) "HaYom Haras Olam" (paragraph starting הַיּוֹם הֲרַת עוֹלָם On this day the world came into being etc.) and "Ereshes" (paragraph starting אֲרֶֽשֶׁת שְׂפָתֵֽינוּ May the utterance of our lips etc.) [Maharil] even on Shabbos when we do not blast, we say "HaYom Haras" but not "Ereshes" [Minhagim]
ב יָחִיד אֵינוֹ מַפְסִיק לִתְקֹעַ בַּבְּרָכוֹת, וַאֲפִלּוּ יֵשׁ לוֹ מִי שֶׁיִּתְקַע לוֹ. הַגָּה: אֶלָּא תּוֹקְעִים לוֹ קֹדֶם שֶׁיִּתְפַּלֵּל מוּסָף, וְאֵין צְרִיכִין לִתְקֹעַ לוֹ שֵׁנִית (כָּל בּוֹ וּבֵית יוֹסֵף בְּשֵׁם א"ח).
2 An individual (i.e. individual praying without a minyan) does not interrupt to blow shofar in the blessings (of the Mussaf Prayer) and even if there is one to blow for him. Rema: Rather we blow Shofar for him before he prays Mussaf, and we do not need to blow for him a 2nd time [Kol Bo and Bais Yosef in the name of Archos Chayim].
ג לֹא יָשִׂיחַ, לֹא הַתּוֹקֵעַ וְלֹא הַצִּבּוּר, בֵּין תְּקִיעוֹת שֶׁמְיֻשָּׁב לִתְקִיעַת שֶׁמְעֻמָּד מִיהוּ בְּעִנְיָן הַתְּקִיעוֹת וְהַתְּפִלּוֹת אֵין הֶפְסֵק (מָרְדְּכַי וּמַהֲרִי"ל), וְאִם סָח דְּבָרִים בְּטֵלִים אֵין צָרִיךְ לַחֲזֹר וּלְבָרֵךְ (טוּר); וְאֵין צָרִיךְ לוֹמַר שֶׁלֹּא יָשִׂיחוּ בֵּין בְּרָכָה לַתְּקִיעוֹת, אִם לֹא בְּעִנְיַן הַתְּקִיעוֹת.
3 One should not talk, not the Tokea nor the congregation, between the 'Sitting Shofar Blasts' (said prior to the Mussaf Prayer) to the 'Standing Shofar Blasts' (said within the Mussaf Prayer). (However in regard to the Shofar Blasts and the Prayers, it is not an interruption [Mordechai and Maharil]. If one did talk empty words (i.e. unrelated to the prayers etc.) it is not necessary to go back and make a blessing)(Tur). And it is not necessary to say (i.e. it goes without saying) that one should not talk between the blessing (of the Shofar) to the blast itself if not in regard to the Shofar Blasts.
ד זֶה שֶׁתּוֹקֵעַ כְּשֶׁהֵן יוֹשְׁבִין, תּוֹקֵעַ עַל סֵדֶר הַבְּרָכוֹת. הַגָּה: וּמִיהוּ אֵינוֹ מְעַכֵּב וְיָכוֹל אַחֵר לִתְקֹעַ, אֶלָּא שֶׁרָאוּי לַעֲשׂוֹת כָּךְ; וּכְבָר כָּתַבְתִּי לְעֵיל סִימָן תקפ "ה.
4 This one who blew the Shofar when they (the congregation) were sitting (that is the blasts prior to the Musaf Prayer), blows the shofar on the order of the blessings (that is within the Musaf Prayer). Rema: However, it is not a prerequisite, and another is able to blow shofar. Rather that it (i.e. what the Mechaber said) is fitting to do so. Already I have written earlier in Chapter 585.