10 T1s to be serial interfaces out of one of the channelized DS3s, the router reports a total of 14 serial interfaces: 7304# sho ver [ - Text Removed - ] 1 FastEthernet interface 2 Gigabit Ethernet interfaces 14 Serial interfaces 4 Channelized T3 ports Here, we can see the individual serial interfaces on the router. Ten of them are logical (s2/0/1:1-s/2/0/10:1), and four of them are physical (s3/1/0 s3/1/3): 7304# sho ip int brie Interface IP-Address OK? Method Status Protocol FastEtherneto unassigned YES NVRAM administratively down down GigabitEthernet0/0 10.220.11.1 YES NVRAM GigabitEthernet0/1 10.220.12.1 YES NVRAM Serial2/0/1:1 10.220.110.1 YES NVRAM up Serial2/0/2:1 10.220.120.1 YES NVRAM up Serial2/0/3:1 10.220.130.1 YES NVRAM up Serial2/0/4:1 10.220.140.1 YES NVRAM up Serial2/0/5:1 unassigned YES manual administratively down down Serial2/0/6:1 unassigned YES manual administratively down down Serial2/0/7:1 unassigned YES manual administratively down down Serial2/0/8:1 unassigned YES manual administratively down down Serial2/0/9:1 unassigned YES manual administratively down down Serial2/0/10:1 unassigned YES manual administratively down down Serial3/1/0 10.100.100.100 YES manual up Serial3/1/1 unassigned YES NVRAM down Serial3/1/2 unassigned YES NVRAM down Serial3/1/3 unassigned YES NVRAM down The output of the show controllers command for a channelized DS3 is quite differ- ent from that for a clear-channel DS3. With a channelized DS3, you get a report of the line status for every 15-minute interval in the last 24 hours. The current alarm status, and the framing and line coding are shown here in bold: 7304# sho controllers t3 2/0 T3 2/0 is up. Hardware is 2CT3+ single wide port adapter CT3 H/W Version: 0.2.2, CT3 ROM Version: 1.0, CT3 F/W Version: 2.5.1 FREEDM version: 1, reset 0 resurrect 0 Applique type is Channelized T3 Description: No alarms detected. Framing is M23, Line Code is B3ZS, Clock Source is Line Rx-error throttling on T1's ENABLED Rx throttle total 99, equipment customer loopback Data in curre