| Comparison/Feature | NEC 2000 IPS | Avaya IP Office |
|---|
| Auto Attendant | Built in | Optional External |
| Authorization Codes | Standard | Not Available |
| Battery Backup | Standard | 110 Volt - External UPS Backup required |
| Background music | Digital Phones | Not Available |
| Card Slots | Universal | Up to 12 Expansion Modules (Model 412) |
| Centrex Compatible | Standard | Not Available |
| Centralized Voice Mail | Optional | Not Available |
| Day-Night Class of Service | Standard | Not available |
| DISA (Direct Inward System Access) | Standard | Not available |
| Display phones | 3 line display | 2 line display |
| E-911 Console Alert | Standard | ??? |
| E-911 Compliant | PRI or CAMA | PRI |
| Expansion capability? | 700+ phones | 360 phones |
| Firewall: | Not needed | Included |
| Introduced | 1994 | 2002 |
| IP Phones | Same appearance | Different appearance |
| ISDN PRI Trunk | Standard | Standard |
| Least Cost Routing | Standard | Standard |
| Maintenance Modem | Standard | Optional |
| Maintenance | On line changes OK for most | System changes can require a reboot |
| Manufacturer | NEC | Third Party in UK and Ireland |
| Microsoft Operating System: | NONE | NT4, XP or 2000 Pro |
| Manufacturer's Warranty | One year standard; Five Year optional | ?? |
| Music On Hold | up to 10 choices, one per dept. etc. | 2 |
| Multi-Line Phones | Digital or IP | Digital or IP |
| Networking to other systems? | Optional | Q.Sig Only |
| Ports - Maximum | 1020 ports | 360 + 4 PRI = 456 ports |
| Private Lines | Standard | Not Available |
| Redundancy | Optional - CPU | Not available |
| Ringing Line Pickup | Standard | Not available? |
| SMDR | Serial or IP output | Creates a file on server |
| Software: | 3600 software | Release 2.1 |
| Speaker Phones 1/2 duplex | Standard | Standard |
| Speaker Phones full duplex | Optional | Not Available |
| Speed Dial # | 4000 Standard | 1000 standard |
| Station Appearances | Unlimited | Limited |
| Station Hunting | Multiple Types | Limited |
| System Mounting | Wall, rack or floor | Rack |
| TAPI | Standard | Standard |
| Tennants | Up to 64 | One |
| Tie Line Capable? | Standard | T-1 only |
| Traffic Measurement | Standard via modem | ?? |
| Uniform Call Distribution | Standard | Not available? |
| Voice Mail Options | Multiple Options (Internal board or External PC) | Network Based, 3 sizes, separate PC required |
| Windows based Maint. Soft. | Standard | Browser Based |
| Wiring | 1 pair | Uses massive amounts RJ-45 patch cables |