What Siemens switch is it? I know the Rolm switch 9005 will not handle callerID if you are using older DID copper trunks for incoming. If you are using PRI for incoming, callerID will work. CallerID also only works from Rolm phone to Rolm Phone...
If you are doing a Point to Point from the Rolm to the CallManager, does the Rolm T1 support Qsig? I know cisco will, but if Rolm T1 card does not, no caller ID information will pass...
Typically Q.SIG on legacy PBXs pass caller-id info in the "Facility" Information Element. CME uses H.323 and H.323 supports caller-id via "Display ID" Information Element. If you want to receive caller-id via the Facility Information Element you need to be using MGCP on CM 3.3 or later.
To be sure issue the "debug isdn q931" command or "debug h245 q931" on the gateway and look for the information follow. The first partial debug shows q931 with the Display ID IE. The second partial debug show q931 with the Facility IE, both of which contain the caller-id info.
CCM|Ie - Q931ChannelIdIe IEData= 18 03 A9 83 97
CCM|Ie - Q931DisplayIe IEData= 28 10 4E 6F 72 6D 61 20 57 61 73 68 69 6E 67 74 6F 6E
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