History Info And Diversion Headers - Avaya Aura Communication Manager 7.1 Application Notes

The Verizon toll-free numbers were mapped by Session Manager to various Communication
Manager extensions. The extension mappings were varied during the testing to allow inbound toll-
free calls to terminate directly on user extensions or indirectly through hunt groups, vector
directory numbers (VDNs) and vectors to user extensions and contact center agents.
The Avaya CPE environment was known to Verizon Business IPCC Services as FQDN
"adevc.avaya.globalipcom.com". For efficiency, the Avaya CPE environment utilizing Session
Manager Release 7.1 and Communication Manager Release 7.1 was shared among other ongoing
test efforts at the Avaya Solutions and Interoperability Test lab. Access to the Verizon Business
IPCC Services was added to a configuration that already used domain "avayalab.com" at the
enterprise. As such, the Avaya SBCE is used to adapt the domains as needed. These Application
Notes indicate the configuration that would not be required in cases where the CPE domain in
Communication Manager and Session Manager match the CPE domain known to Verizon.
The following summarizes various header contents and manipulations for toll-free calls in the
sample configuration:
 Verizon Business IPCC Services node sends the following in the initial INVITE to the
CPE:
o The CPE FQDN of adevc.avaya.globalipcom.com in the Request URI.
o The Verizon Business IPCC Services gateway IP address in the From header.
o The enterprise SBC outside IP address (e.g., 1.1.1.2) in the To header.
o Sends the INVITE to Avaya CPE using destination port 5060 via UDP
 Avaya Session Border Controller for Enterprise sends Session Manager:
o The Request URI contains avayalab.com.
o The host portion of the From header and PAI header contains avayalab.com
o The host portion of the To header contains avayalab.com
o Sends the packet to Session Manager using destination port 5060 via TCP
 Session Manager sends Communication Manager
o The Request URI contains avayalab.com, to match the shared Avaya SIL test
environment.
o Sends the packet to Communication Manager using destination port 5071 via TLS
to allow Communication Manager to distinguish Verizon traffic from other traffic
arriving from the same instance of Session Manager.
Note – The Fully Qualified Domain Names and IP addressing specified in these Application Notes
apply only to the reference configuration shown in Figure 1. Verizon Business customers will use
FQDNs and IP addressing appropriate for the unique customer environment.

3.1. History Info and Diversion Headers

The Verizon Business IPCC Services suite does not support SIP History Info headers or Diversion
headers. Therefore, Communication Manager was provisioned not to send History Info headers or
Diversion headers.
DDT; Reviewed:
SPOC 10/18/2017
Solution & Interoperability Test Lab Application Notes
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