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- Description
- Specifications
The PA-A3-8E1IMA is a Cisco ATM inverse multiplexing over ATM (IMA) port adapter with 8 E1 ports. It belongs to the enhanced ATM PA-A3 port adapter family for Cisco 7200 and 7500 series routers, and for 7600 OSR series routers through the FlexWAN module in the Catalyst 6000 family.
The IMA adapter handles up to 2048 virtual connections and up to 256 virtual paths. Connections can be permanent virtual connections created by hand, or switched virtual connections set up through point-to-point and point-to-multipoint UNI signaling.
Each E1 port runs at 2.048 Mbps over a 120-ohm symmetric pair. ATM services include ATM Forum UNI 3.0, 3.1 and 4.0 signaling, ILMI address registration and F4 and F5 OAM cell flows, with per-VC and per-VP traffic shaping and nrt-VBR, ABR and UBR service classes.
The T1 counterpart with eight ports is the PA-A3-8T1IMA. More port adapters and WAN cards are in Cisco interface cards, and the routers that take them are in Cisco routers.
| Part number | PA-A3-8E1IMA |
| Type | ATM inverse multiplexer over ATM (IMA) port adapter |
| Ports | 8 x E1 |
| E1 speed | 2.048 Mbps, 120-ohm symmetric pair |
| Virtual connections | Up to 2048 (IMA adapter) |
| Virtual paths | Up to 256 |
| Signaling | ATM Forum UNI 3.0, 3.1 and 4.0; ILMI |
| Service classes | nrt-VBR, ABR, UBR, per-VC and per-VP traffic shaping |
| T1 counterpart | PA-A3-8T1IMA |
| Compatible with | Cisco 7200 and 7500 series routers; Cisco 7600 OSR series routers and Catalyst 6000 family through the FlexWAN module |