clarified adjustable

Author: eric-urban

articles/cognitive-services/Speech-Service/speech-services-quotas-and-limits.md

@@ -8,7 +8,7 @@ manager: nitinme
 ms.service: cognitive-services
 ms.subservice: speech-service
 ms.topic: conceptual
-ms.date: 04/22/2022
+ms.date: 02/17/2023
 ms.author: alexeyo
 ---
 
@@ -20,25 +20,25 @@ For the free (F0) pricing tier, see also the monthly allowances at the [pricing
 
 ## Quotas and limits reference
 
-The following sections provide you with a quick guide to the quotas and limits that apply to Speech service.
+The following sections provide you with a quick guide to the quotas and limits that apply to the Speech service.
 
 For information about adjustable quotas for Standard (S0) Speech resources, see [additional explanations](#detailed-description-quota-adjustment-and-best-practices), [best practices](#general-best-practices-to-mitigate-throttling-during-autoscaling), and [adjustment instructions](#speech-to-text-increase-online-transcription-concurrent-request-limit). The quotas and limits for Free (F0) Speech resources aren't adjustable. 
 
 ### Speech-to-text quotas and limits per resource
 
-This section describes speech-to-text quotas and limits per Speech resource. 
+This section describes speech-to-text quotas and limits per Speech resource. Unless otherwise specified, the limits aren't adjustable.
 
 #### Online transcription
 
 You can use online transcription with the [Speech SDK](speech-sdk.md) or the [speech-to-text REST API for short audio](rest-speech-to-text-short.md).
 
 > [!IMPORTANT]
-> These limits apply to concurrent speech-to-text [online transcription](#online-transcription) requests and [speech translation](#speech-translation-quotas-and-limits-per-resource) requests combined. For example, if you have 50 concurrent speech-to-text requests and 50 concurrent speech translation requests, you'll reach the limit of 100 concurrent requests.
+> These limits apply to concurrent speech-to-text [online transcription](#online-transcription) requests and [speech translation](#speech-translation-quotas-and-limits-per-resource) requests combined. For example, if you have 60 concurrent speech-to-text requests and 40 concurrent speech translation requests, you'll reach the limit of 100 concurrent requests.
 
 | Quota | Free (F0) | Standard (S0) |
 |--|--|--|
-| Concurrent request limit - base model endpoint | 1 | 100 (default value) |
-| Concurrent request limit - custom endpoint | 1 | 100 (default value) |
+| Concurrent request limit - base model endpoint | 1 <br/><br/>This limit isn't adjustable. | 100 (default value)<br/><br/>The rate is adjustable for Standard (S0) resources. See [additional explanations](#detailed-description-quota-adjustment-and-best-practices), [best practices](#general-best-practices-to-mitigate-throttling-during-autoscaling), and [adjustment instructions](#speech-to-text-increase-online-transcription-concurrent-request-limit). |
+| Concurrent request limit - custom endpoint | 1 <br/><br/>This limit isn't adjustable. | 100 (default value)<br/><br/>The rate is adjustable for Standard (S0) resources. See [additional explanations](#detailed-description-quota-adjustment-and-best-practices), [best practices](#general-best-practices-to-mitigate-throttling-during-autoscaling), and [adjustment instructions](#speech-to-text-increase-online-transcription-concurrent-request-limit). |
 
 #### Batch transcription
 
@@ -66,13 +66,13 @@ The limits in this table apply per Speech resource when you create a Custom Spee
 
 ### Text-to-speech quotas and limits per resource
 
-This section describes text-to-speech quotas and limits per Speech resource. 
+This section describes text-to-speech quotas and limits per Speech resource. Unless otherwise specified, the limits aren't adjustable.
 
 #### Common text-to-speech quotas and limits
 
 | Quota | Free (F0) | Standard (S0) |
 |--|--|--|
-| Maximum number of transactions per time period for prebuilt neural voices and custom neural voices. | 20 transactions per 60 seconds | 200 transactions per second (TPS) (default value)<br/><br/>The rate is adjustable up to 1000 TPS for Standard (S0) resources. See [additional explanations](#detailed-description-quota-adjustment-and-best-practices), [best practices](#general-best-practices-to-mitigate-throttling-during-autoscaling), and [adjustment instructions](#text-to-speech-increase-concurrent-request-limit). |
+| Maximum number of transactions per time period for prebuilt neural voices and custom neural voices. | 20 transactions per 60 seconds<br/><br/>This limit isn't adjustable. | 200 transactions per second (TPS) (default value)<br/><br/>The rate is adjustable up to 1000 TPS for Standard (S0) resources. See [additional explanations](#detailed-description-quota-adjustment-and-best-practices), [best practices](#general-best-practices-to-mitigate-throttling-during-autoscaling), and [adjustment instructions](#text-to-speech-increase-concurrent-request-limit). |
 | Max audio length produced per request | 10 min | 10 min |
 | Max total number of distinct `<voice>` and `<audio>` tags in SSML | 50 | 50 |
 | Max SSML message size per turn for websocket | 64 KB | 64 KB |
@@ -101,12 +101,12 @@ This section describes text-to-speech quotas and limits per Speech resource.
 This section describes speech translation quotas and limits per Speech resource. 
 
 > [!IMPORTANT]
-> These limits apply to concurrent speech-to-text [online transcription](#online-transcription) requests and [speech translation](#speech-translation-quotas-and-limits-per-resource) requests combined. For example, if you have 50 concurrent speech-to-text requests and 50 concurrent speech translation requests, you'll reach the limit of 100 concurrent requests.
+> These limits apply to concurrent speech-to-text [online transcription](#online-transcription) requests and [speech translation](#speech-translation-quotas-and-limits-per-resource) requests combined. For example, if you have 60 concurrent speech-to-text requests and 40 concurrent speech translation requests, you'll reach the limit of 100 concurrent requests.
 
 | Quota | Free (F0) | Standard (S0) |
 |--|--|--|
-| Concurrent request limit - base model endpoint | 1 | 100 (default value) |
-| Concurrent request limit - custom endpoint | 1 | 100 (default value) |
+| Concurrent request limit - base model endpoint | 1 <br/><br/>This limit isn't adjustable. | 100 (default value)<br/><br/>The rate is adjustable for Standard (S0) resources. See [additional explanations](#detailed-description-quota-adjustment-and-best-practices), [best practices](#general-best-practices-to-mitigate-throttling-during-autoscaling), and [adjustment instructions](#speech-to-text-increase-online-transcription-concurrent-request-limit). |
+| Concurrent request limit - custom endpoint | 1 <br/><br/>This limit isn't adjustable. | 100 (default value)<br/><br/>The rate is adjustable for Standard (S0) resources. See [additional explanations](#detailed-description-quota-adjustment-and-best-practices), [best practices](#general-best-practices-to-mitigate-throttling-during-autoscaling), and [adjustment instructions](#speech-to-text-increase-online-transcription-concurrent-request-limit). |
 
 ### Speaker recognition quotas and limits per resource
 
@@ -139,14 +139,12 @@ The next sections describe specific cases of adjusting quotas.
 
 ### Speech-to-text: increase online transcription concurrent request limit
 
-By default, the number of concurrent requests is limited to 100 per resource in the base model, and 100 per custom endpoint in the custom model. For the standard pricing tier, you can increase this amount. Before submitting the request, ensure that you're familiar with the material discussed earlier in this article, such as the best practices to mitigate throttling.
+By default, the number of concurrent speech-to-text [online transcription](#online-transcription) requests and [speech translation](#speech-translation-quotas-and-limits-per-resource) requests combined is limited to 100 per resource in the base model, and 100 per custom endpoint in the custom model. For the standard pricing tier, you can increase this amount. Before submitting the request, ensure that you're familiar with the material discussed earlier in this article, such as the best practices to mitigate throttling.
 
 >[!NOTE]
-> If you use custom models, be aware that one Speech service resource might be associated with many custom endpoints hosting many custom model deployments. Each custom endpoint has the default limit of concurrent requests (100) set by creation. If you need to adjust it, you need to make the adjustment of each custom endpoint *separately*. Note also that the value of the limit of concurrent requests for the base model of a resource has *no* effect to the custom endpoints associated with this resource.
+> Concurrent request limits for base and custom models need to be adjusted separately. You can have a Speech service resource that's associated with many custom endpoints hosting many custom model deployments. As needed, the limit adjustments per custom endpoint must be requested separately. 
 
-Increasing the limit of concurrent requests doesn't directly affect your costs. Speech service uses a payment model that requires that you pay only for what you use. The limit defines how high the service can scale before it starts throttle your requests.
-
-Concurrent request limits for base and custom models need to be adjusted separately.
+Increasing the limit of concurrent requests doesn't directly affect your costs. The Speech service uses a payment model that requires that you pay only for what you use. The limit defines how high the service can scale before it starts throttle your requests.
 
 You aren't able to see the existing value of the concurrent request limit parameter in the Azure portal, the command-line tools, or API requests. To verify the existing value, create an Azure support request.