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PSTN Caller no ring back tone when IPPhone is CallForwarded

CallManager version 4.1(3)SR with 6608 T1 blade. IPPhone is call forwarded to an external PSTN number. PSTN caller dials IPPHone DID number, Phone is forwarded to external number via 6608 T1 PRI, PSTN user hears no ring back. User most of the time hangs up. Any help would be great.

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Hall of Fame Super Red

Re: PSTN Caller no ring back tone when IPPhone is CallForwarded

Hi John,

You could try changing this setting on the Callmanager Gateway config page (after hours);

Setup non-ISDN Progress Indicator IE Enable

Default leaves this setting disabled (unchecked).

Enable this setting only if users are not receiving ringback tones on outbound calls.

When this setting is enabled, the Cisco CallManager sends Q.931 Setup messages out digital (that is, non-H.323) gateways with the Progress Indicator field set to non-ISDN.

This message notifies the destination device that the Cisco CallManager gateway is non-ISDN and that the destination device should play in-band ringback.

From this doc;

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00803ed699.html#wp1311922

Hope this helps!

Rob

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