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Call Manager Translation Pattern Issues

I have a phone with UK DDI and it is registered to a call manager.      

This is working.

However the Router has an E1 connection to a local PSTN for local country lines.

I have got the numbers of DDIs from the Telco and want to create a translation pattern so that each of the phone has a local country number apart from the UK DDIs.

I have created this using

Translation Pattern: Local Country DDI

Partition: Same as for the Line DN on the actual IP Phone

Calling Search Space: Same as for the Line DN on the actual IP Phone

Called Party Transform Mask: The extension number for the IP Phone

I can see the digits hitting the Router (E1 registered with MGCP)

Jul 12 16:05:21.173: ISDN Se0/0/0:15 Q931: RX <- SETUP pd = 8  callref = 0x07CB

        Sending Complete

        Bearer Capability i = 0x9090A3

                Standard = CCITT

                Transfer Capability = 3.1kHz Audio

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0xA18395

                Preferred, Channel 21

        Progress Ind i = 0x8281 - Call not end-to-end ISDN, may have in-band info

        Calling Party Number i = 0x1183, '44UKDDI'

                Plan:ISDN, Type:International

        Called Party Number i = 0xC1, 'AngolaDDI'

                Plan:ISDN, Type:Subscriber(local)

Jul 12 16:05:21.177: ISDN Se0/0/0:15 Q931: TX -> RELEASE_COMP pd = 8  callref = 0x87CB

        Cause i = 0x8081 - Unallocated/unassigned number

Can somebody please advice what could be the issue regarding this?

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