E1-Common Setting

(READ ONLY) Indicates the IP of the SIP server (SWE Edge SIP IP - 169.254.1.120) to which all SIP/IP requests will be sent if the PRI feature is enabled on the interface.

Framing mode defines the number of frames that are grouped together. E1 supports framed modes and an unframed mode. E1 framed modes have a 2.048Mbit channel divided into 32 basic channels. Channel 0 is always reserved for framing and cannot be used for media. Channel 16 is the signaling channel and is used for different purposes. E1 frames are 256 bits (32 x 8bits). There are 8000 frames per second with 2048000 bits per second data rate.

• Double Frame—Basic E1 mode. Two frames are form a 16-bit framing word (2 8bit samples of channel 0). PRI can be used,
  and channel 16 is typically used for the D-channel. No cyclic redundancy check (CRC) is performed in this mode.
• Multi Frame CRC—Groups 16 256-bit frames together, creating a 128-bit framing word. Some of the framing bits are used to add
  a CRC-4 error check. PRI can be used, and channel 16 is typically used for the D-channel.
• Unframed—No framing support and can be used for data.

Options are Double-Frame, MultiFrame-CRC-NoCAS, MultiFrame-CRC-CAS, Unframed.

Defines the bit encoding method used while transmitting data over the line.

Options are HDB3 (High-Density Bipolar Order 3) and AMI (Alternative Mark Inversion).