We would like to introduce caller ID into a phone system that is currently running a Nortel Option 61. Two PRIs will be terminated into two 28XX routers that will be frontending the Opt61. We are doing this to position ourselves to eventually migrate to IPT. The connection between the 28XX and the Opt 61 I am assuming will be PRIs running QSiG? Any gotchas out there or things I need to be aware of that people may have seen? No CUCMs yet so these gateways will be standalone caller id gateways for the OPtion 61. Any advice would be appreciated.
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You will probably want to use the 2-PRI (VWIC2-2MFT-T1/E1) to maximize the 2800 series potential here;
Any native HWIC slot on Cisco 2801, 2811,
2821, 2851, 3825 and 3845 and any VIC slot
on NM-HDV, NM-HDV2, NM-HD-2VE,
NM-2W, NM-1FE1R2W, NM-1FE2W-V2,
Cards, Ports, and Slots
Cisco 2801: 2 HWIC slots, 2 VWIC slots, 2 PVDM slots, 2 AIM slots
Cisco 2811: 4 HWIC slots, 1 expansion network module slot, 2 PVDM slots, 2 AIM slots
Cisco 2821: 4 HWIC slots, 1 expansion network module slot, 1 extension voice/fax module slot, 3 PVDM slots,
Cisco 3825: 4 HWIC slots, 2 expansion network module slot, 4 PVDM slots, 2 AIM slots
Cisco 3845: 4 HWIC slots, 4 expansion network module slot, 4 PVDM slots, 2 AIM slots
Hope this helps!
PS: We found the 2821's to be an excellent choice.