E1/T1 cards that AR routers support are described as follows:
1. 1E1T1-M/2E1T1-M/4E1T1-M/8E1T1-M equipped with 1 interface or /2/4/8 interfaces support the switching use of E1 and T1. Cards equipped with 4 or 8 interfaces do not support T1 currently.
- Cards equipped with 1 interface or 2 interfaces use the DB9 female connector interface and support E1/CE1/CT1/PRI(E1&T1) modes.
- Cards equipped with 4/8 interfaces use the RJ45 interface and support E1/CE1/PRI(E1) modes.
2. 1E1T1-F/2E1T1-F/4E1T1-F/8E1T1-F equipped with 1 interface or /2/4/8 interfaces support the switching use of E1 and T1. Cards equipped with 4 or 8 interfaces do not support T1 currently.
- Cards equipped with 1 interface or 2 interfaces use the DB9 female connector interface and support E1 (framed and unframed) and T1 modes.
- Cards equipped with 4/8 interfaces use the RJ45 interface and support E1 (framed and unframed) mode.
3. 4E1-IMA, which is used on ATM networks, demultiplexes an aggregate ATM cell flow into multiple lower-speed E1 links, and multiplexes the E1 links on the far end to restore the original aggregate ATM cell flow.
1. Set Service type to Virtual user and Call property to Automatic switchboard. Configure Trunk access yes or no based on the actual requirements.
2. When configuring the AT0 trunk, the default called number is set to the access code of the automatic switchboard configured in the preceding step.
After the unbalanced cable of the E1 port is converted to a balanced cable, the pin assignments are as follows:
BNC: RX <-->RJ45: 1 and 2
BNC: TX <-->RJ45: 4 and 5
For more information, see the Quick Installation Guide of the U1900 series unified gateway.
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