I'm using Cisco PGW2200 solution ver.9.4.1 in nailed mode. When i got IAM, PGW sending Address Complete Message which contains such parameter as "Called party status". By default MGC setting this parameter to "0 no_indication_default". here is example:
********************************** DETAIL ********************************** CIC 10 MESSAGE TYPE 0x06 ACM - Address_Complete_Msg BACKWARD CALL IND 0x11 LENGTH: 0x02 FIXED DATA 0x02 0x14 CHARGE IND 2 charge CALLED PTYS STATUS IND 0 no_indication_default CALLED PARTYS CATEGORY 0 no_indication_default END-TO-END METHOD IND 0 no_end_to_end_method_available INTERWORKING IND 0 no_interworking_encountered END-TO-END INFO IND 0 no_end_to_end_information_available ISUP IND. 1 ISUP_used_all_the_way REVERSE HOLDING IND 0 reverse_holding_not_required ISDN ACCESS IND. 1 terminating_access_ISDN INDEX TO OPTIONAL PART 0x00
How can i change this parameter to "1 subscriber_free"?
If you are using a nailed PGW this means that the GW is not sending you an alerting. Normally ACM = alerting in SS7. If the ACM does not have indication then it is typically followed by a CPG messages once the laert message is received from the gateway. Normally you would not want to have something like this hardcoded as you would be cutting the audio path open in both directions even if there was not audio to play.
I have listed some other options for you to try, but be warned that they may cause some complications to the customer down the road. Try any of the following solutions:
1. Configure the Cisco IOS global configuration command voice call send-alert in the terminating gateway/router. This command enables the terminating gateway to send an alert message instead of a progress message after it receives a call setup.
2. If the previous solution does not work, configure the terminating gateway to send a PI = 8 in the Alert message by configuring the command progress_ind alert enable 8 under the voice dial-peer # pots configuration. This command overrides PI value received in ISDN alert message and causes the router to cut through the audio path back towards the calling party prior to connect.
Note: The progress_ind alert and the progress_ind setup commands are hidden in some versions of Cisco IOS Software and may not be visible within the help parser. However, if the progress_ind progress command is available in the help parser, the above commands will also be available and can be entered into the dial peer in their entirety. These commands will subsequently appear in the running configuration.
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