RTC : checkout failure in Jenkins

I have complete access & required permissions to the RTC server. Servers are running in 6.0.6 version. 
But the builds are successful only in Productive server but failing with below error in Development server.
Jenkins is configured with compatible 6.0.6 RTC build toolkit.
Pls Let me know if anything I have missed. 

More details: In Jenkins configuration --> source code management: "Test connection" is successful for Production server but not for Development server.
It says "The Team Concert server does not have the support required to avoid using the toolkit : Your server is version 6.0.6".

Log:
FATAL: RTC : checkout failure: CRJAZ1371E The following URL cannot be reached: /ccm/versionCompatibility?clientVersion=6.0.6. The server cannot be reached. The network could not connect to the server. Error details: Connect to rb-alm-05-d.de.bosch.com:443 [rb-alm-05-d.de.bosch.com/10.58.122.248] failed: Connection timed out: connect. 
com.ibm.team.repository.common.transport.ConnectionException: CRJAZ1371E The following URL cannot be reached: /ccm/versionCompatibility?clientVersion=6.0.6. The server cannot be reached. The network could not connect to the server. Error details: Connect to rb-alm-05-d.de.bosch.com:443 [rb-alm-05-d.de.bosch.com/10.58.122.248] failed: Connection timed out: connect. 
    at com.ibm.team.repository.transport.client.RemoteTeamServer.executePrimitiveRequest(RemoteTeamServer.java:1976)
    at com.ibm.team.repository.transport.client.RemoteTeamServer.executeWithAuthHandling(RemoteTeamServer.java:1626)
    at com.ibm.team.repository.transport.client.RemoteTeamServer.executeMethod(RemoteTeamServer.java:1241)
    at com.ibm.team.repository.transport.client.RemoteTeamServer.executeMethod(RemoteTeamServer.java:1190)
    at com.ibm.team.repository.transport.client.RestClientConnectionBase.executeMethod(RestClientConnectionBase.java:375)
    at com.ibm.team.repository.transport.client.RestClientConnectionBase.doMethod(RestClientConnectionBase.java:211)
    at com.ibm.team.repository.transport.client.RestClientConnectionBase.doGet(RestClientConnectionBase.java:144)
    at com.ibm.team.repository.transport.client.TeamRawRestServiceClient$RawRestClientConnection.doGet(TeamRawRestServiceClient.java:96)