You are provisioning a DS-1 circuit on an ONS 15454 2F-BLSR with a XC-10G card. Each VT1.5 connection must also terminate via the STS matrix. On the originating circuit node, how many STS ports are now available for VT1.5 circuits?（）
- A、2
- B、3
- C、4
- D、20
- E、22
- F、24
正确答案:E
答案解析:有
微信扫一扫手机做题