updated links for SBC vendors

Author: boris-bazilevskiy

articles/communication-services/concepts/telephony-sms/certified-session-border-controllers.md

@@ -35,9 +35,9 @@ If you have any questions about the SBC certification program for Communication
 |Vendor|Product|Software version|
 |:--- |:--- |:--- 
 |[AudioCodes](https://www.audiocodes.com/media/lbjfezwn/mediant-sbc-with-microsoft-azure-communication-services.pdf)|Mediant SBC|7.40A
-|Metaswitch|Perimeta SBC|4.9|
+|[Metaswitch](https://manuals.metaswitch.com/Perimeta/V4.9/AzureCommunicationServicesIntegrationGuide/Source/notices.html)|Perimeta SBC|4.9|
 |[Oracle](https://www.oracle.com/technical-resources/documentation/acme-packet.html)|Oracle Acme Packet SBC|8.4|
-|Ribbon Communications|SBC SWe / SBC 5400 / SBC 7000|9.02|
+|Ribbon Communications|[SBC SWe / SBC 5400 / SBC 7000](https://support.sonus.net/display/ALLDOC/Ribbon+Configurations+with+Azure+Communication+Services+Direct+Routing)|9.02|
 ||SBC SWe Lite / SBC 1000 / SBC 2000|9.0
 
 Note the certification granted to a major version. That means that firmware with any number in the SBC firmware following the major version is supported.