0x11 Logical/Physical Span

Byte | AIB Field Description
--- | ---
2 | Address Element 0x11
3 | Data Length 0x04
4,5 | Data[0, 1] Logical Span ID (MSB, LSB) Single-node system: 0-83 (0x0000-0x0053) Multi-node system: 0-1343 (0x0000-0x0053F) NOTE: When configuring a node for greater than 64 spans, please contact Dialogic Technical Support for assistance. The value 0xFFFF is reserved for de-assigning span IDs.
6 | Data[2] Slot For the CSP 2090: 0–15 For the CSP 2040: 0–3
7 | Data[3] Physical Span/Offset 4-Span Line Card: 0-3 8-Span Line Card: 0-7 16-Span Line Card: 0-15 DS3 Card: 0-27 VDAC-ONE Card 0-4 IPN Series 2 Profile 1 0-31 Profile 2 0-15

See Address Information Block.
The information in an AIB that follows the header, down to the data field. An AIB can have one or more Address Elements. AEs correspond to Span, Channel, and SS7 Link.
Range of channels provided by T1 or E1 transmission service. A physical span is a group of channels taking up a single physical wire. A logical span is a group of channels taking up less than a single logical wire, or carried over more than one physical wire.
Most Significant Bit
Least Significant Bit
Voice Data Access Concentrator Card. Performs two-way conversion between circuit-switched data and packet-switched Ethernet data required by packetized voice applications such as VoIP.