Cisco Cisco Customer Voice Portal 8.0(1)

• The SIP Service only reads the data and sends it to Unified ICME (it does not modify the

data).

• Session Timer RFC 4028 support in Unified CVP. Unified CVP, acting as a Back-to-Back

User Agent (b2bua) will transparently pass thru the headers for Supported, Session Expires,
and Min-SE on the call legs. However, since the IOS gateway does not set a Session Expires
header by itself, it will not request session refreshing. By default, Unified CVP adds a
Session-Expires: 1800;refresher=uac value to the 200OK response on the initial invite sent
into Unified CVP by the caller, if the Session Expires header is not already present in the
200OK of the outbound leg. This value will cause the gateway, as UAC, to send the refesher
invites in mid call every 1800 seconds. This configuration allows the gateway to clean up a
zombie call, due to a failed refresher reinvite, if the Unified Call Server is taken down in mid
call. The setting on Unified CVP to disable adding a Session Expires header is configurable.

How UUI is Delivered

Assume the following ISDN data is sent in the call to Unified CVP:

PRN,isdn*,,ATT5*,

USI,rate,c,s,c,1

USI,lay1,ulaw

TMR,00

CPN,00,,u,5900

CPC,09

FCI,,,,,,,y,

UUS,3,3132333435

GCI,87c0c79d91dd11daa9c4000bfda207f2

Note: By default, UUS field data is converted from 2-byte hex representation to 1-byte ASCII;
for example, the UUS value would be"303132333530" in 2-byte hex representation; in 1-byte
ASCII, the value would be "012350."

The Generic Type Descriptor (GTD) Parameter Forwarding configuration setting in the
Operations Console is used for passing GTD (UUI) data to Unified ICME in a new call. (The
default is UUS.) Additionally, other parameters in the GTD can also be extracted and sent to
Unified ICME. (UUS,PRN,GCI) use comma-separated values. Any parameter contained in the
NSS IAM message can be extracted. (Refer to the ITU-T Narrowband Signaling Syntax
spec(Q.1980.1).)

Configure the SIP Service by selecting Device Management > CVP Call Server > SIP tab in
the Operations Console and make an entry for the Generic Type Descriptor (GTD) Parameter
Forwarding with the string to forward using the parameter names delimited by commas. For
example, configure the SIP Service with the string 

 to forward these three

parameters in a concatenated string to Unified ICME. The Unified ICME script needs to retrieve
the call variable on the route request message called "UsertoUserInfo," and parse out the needed
information.

Configuration and Administration Guide for Cisco Unified Customer Voice Portal Release 8.0(1)