This issue is for Calls from an SRST site to central site CUCM. Calls dialed with full national number from the SRST traverses the WAN, into the central site, into the PSTN cloud then back to Central Site. The Call Manager version is 7.1 and the appropriate route lists configured on the SRST gateway to route calls first to the local gateway and into the Central Site. The SRST router has two links - one to the WAN and another to the PSTN circuit.
I am unable to understand if this issue is at the Central Site or SRST site.
Thanks and Regards.