[cisco-voip] how to strip leading number in calling party

[abuch]

Dear all,

CUCM 6.1.3-100016, Cisco 3845 H.323 gw connected to the PSTN with ISDN PRI.
Outgoing calls to the PSTN are appearing to have a leading additional 0. The
DID number range I am using is 095960XXXX. I have configured calling party
trasformation mask as 95960XXXX. But when I make calls to the PSTN the CLID
displayed as 0095960XXXX.
The output of debug isdn q931:-

Feb 11 15:01:47.051: ISDN Se2/1:15 Q931: Applying typeplan for sw-type 0x12
is 0x0 0x0, Calling num 959602203
Feb 11 15:01:47.051: ISDN Se2/1:15 Q931: Applying typeplan for sw-type 0x12
is 0x0 0x0, Called num 0959502203
Feb 11 15:01:47.051: ISDN Se2/1:15 Q931: TX -> SETUP pd = 8  callref =
0x01B3
        Sending Complete
        Bearer Capability i = 0x8090A3
                Standard = CCITT
                Transfer Capability = Speech
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0xA9839F
                Exclusive, Channel 31
        Calling Party Number i = 0x0081, '959602203'
                Plan:Unknown, Type:Unknown
        Called Party Number i = 0x80, '0959502203'
                Plan:Unknown, Type:Unknown
Feb 11 15:01:47.195: ISDN Se2/1:15 Q931: RX <- CALL_PROC pd = 8  callref =
0x81B3
        Channel ID i = 0xA9839F
                Exclusive, Channel 31
Feb 11 15:01:51.159: ISDN Se2/1:15 Q931: RX <- ALERTING pd = 8  callref =
0x81B3
        Progress Ind i = 0x8488 - In-band info or appropriate now available
Feb 11 15:02:07: %ISDN-6-DISCONNECT: Interface Serial2/1:0  disconnected
from 0959502812 , call lasted 62 seconds
Feb 11 15:02:07.472: ISDN Se2/1:15 Q931: TX -> DISCONNECT pd = 8  callref =
0xF400
        Cause i = 0x8090 - Normal call clearing
Feb 11 15:02:07.632: ISDN Se2/1:15 Q931: RX <- RELEASE pd = 8  callref =
0x7400
Feb 11 15:02:07.632: ISDN Se2/1:15 Q931: TX -> RELEASE_COMP pd = 8  callref
= 0xF400
Feb 11 15:02:11.408: ISDN Se2/1:15 Q931: TX -> DISCONNECT pd = 8  callref =
0x01B3
        Cause i = 0x8090 - Normal call clearing
Feb 11 15:02:11.672: ISDN Se2/1:15 Q931: RX <- RELEASE pd = 8  callref =
0x81B3
Feb 11 15:02:11.672: ISDN Se2/1:15 Q931: TX -> RELEASE_COMP pd = 8  callref
= 0x01B3


What can I do in order to remove the additional 0? or is it a telcom issue?
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