DDT; Reviewed:
SPOC 10/18/2017
Solution & Interoperability Test Lab Application Notes
©2017 Avaya Inc. All Rights Reserved.
The following screen shows Page 3 of the output of the status trunk command pertaining to this
same call. Here it can be observed that G.729 codec is used.
9.1.2 Example Incoming Call Referred via Call Vector to PSTN Destination
The following edited and annotated Communication Manager list trace tac trace output shows a
call incoming on trunk group 2. The call was routed to a Communication Manager vector directory
number (VDN 10001) associated with a call vector (call vector 1). The vector answers the call,
plays an announcement to the caller, and then uses a “route-to” step to cause a REFER message to
be sent with a Refer-To header containing the number configured in the vector “route-to” step. The
PSTN telephone dialed 866-852-3221. Session Manager can map the number received from
Verizon to the VDN extension (x10001), or the incoming call handling table for trunk group 1 can
do the same. In the trace below, Session Manager had already mapped the Verizon number to the
Communication Manager VDN extension. The annotations in the edited trace highlight key
behaviors. At the conclusion, the PSTN caller that dialed the Verizon toll-free number is talking to
the Referred-to PSTN destination, and no trunks (i.e., from trunk 1 handling the call) are in use.
list trace tac *02 Page 1
/* Session Manager has adapted the dialed number 8668523221 to VDN 10001 */
12:28:09 TRACE STARTED 09/14/2017 CM Release String cold-01.0.532.0-23985
12:28:15 SIP<INVITE sips:10001@avayalab.com SIP/2.0
12:28:15 Call-ID: 9990ed3160377b0d0c7d822a3d541b55
12:28:15 active trunk-group 2 member 1 cid 0x62d
12:28:15 0 0 ENTERING TRACE cid 1581
12:28:15 2 1 vdn e10001 bsr appl 0 strategy 1st-found override n
12:28:15 2 1 AVDN: 10001 AVRD:
12:28:15 2 1 wait 2 secs hearing ringback
/* Vector step plays ringback. 183 with SDP is sent*/
12:28:15 SIP>SIP/2.0 183 Session Progress
12:28:15 Call-ID: 9990ed3160377b0d0c7d822a3d541b55
12:28:15 dial 10001
12:28:15 ring vector 2 cid 0x62d
12:28:15 G729 ss:off ps:20
rgn:2 [10.64.91.50]:35082
rgn:1 [10.64.91.60]:6134
12:28:17 2 2 # Play announcement to caller i...
12:28:17 2 3 announcement 11006
12:28:17 SIP>SIP/2.0 183 Session Progress
12:28:17 Call-ID: 9990ed3160377b0d0c7d822a3d541b55
12:28:17 2 3 announcement: board 001V9 ann ext: 11006
/* Vector step answers call with announcement. 200 OK is sent */
12:28:17 SIP>SIP/2.0 200 OK
12:28:17 Call-ID: 9990ed3160377b0d0c7d822a3d541b55
12:28:17 active announcement 11006 cid 0x62d
12:28:17 hear annc source 001V9 ext 11006 cid 0x62d
12:28:17 Connected party uses public-unknown-numbering
12:28:17 SIP<ACK sips:+18668523221@10.64.91.65:5071;transport=tls SI
12:28:17 SIP<P/2.0
<continued on next page>
status trunk 2/1 Page 3 of 3
SRC PORT TO DEST PORT TALKPATH
src port: T00011
T00011:TX:10.64.91.50:35056/g729/20ms/1-srtp-aescm128-hmac80
S00003:RX:10.64.91.157:25426/g729a/20ms/1-srtp-aescm128-hmac80
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