Change the format of E1-F to unframed, and then it could interconnect with the traditional E1 2M of non-time slot;
Or, change the E1 to CE1, and bind all time-slot; however, this reduces 64K bandwidth of link since there are only 31 time-slots could be used in CE1.
2) Huawei’s E1/CE1 are all on the same card, with labels including: E1, 2E1, 4E1, E1/CE1/PRI;
3) E1-F is defaulted to format of framed, and E1 is unframed format alone. The diversity in frame format causes the data frame non-recognizable.