## System parameters

### Multiplexer’s symbolic name

Each multiplexer can have a symbolic name assigned, which will be displayed in the console prompt and can be used to easily identify it.

### Multiplexer’s location

Changes the location of the multiplexer, displayed in the command prompt. This helps to identify the multiplexer.

### Acceess from all

There is no restriction for anybody (not recommended becouse of unsafety).

### Acceess from local network

Access for local network users only. Users from other networks won't have access.

### Acceess from white-list

Access for limited number of users from the "white-list".

### Built-in clock and calendar

The multiplexer has a real-time clock and a calendar with battery power built-in. They are used to determine the time an event appeared for the event log. Every time the multiplexer starts, it checks the data stored in the clock volatile memory and, in case of error, indicates the necessity to replace the clock lithium battery.

## Network parameters

Each multiplexer has one system Ethernet interface connected to the built-in second level switch. This interface has its MAC address, IP address, mask and default gate set. The vendor assigns a unique MAC address to each multiplexer, which depends on the serial number of the device. When the MAC address of the device is changed, it is nec-essary to ensure that different network nodes do not have the same address.

### Device MAC

Sets the MAC address of the multiplexer in the HH-HH-HH-HH-HH-HH format, where H is a hexadecimal digit. If the MAC address of the device is changed, it is necessary to ensure that no devices in the net-work have the same address. The vendor assigns a unique MAC-address to each of the multiplexers. After changing MAC address ‘arp -d *’ command should be executed on the operating computer for clearing the table of conformity MAC and IP addresses for access to the multiplexer. WARNING! Changing of MAC address can lead to malfunctioning of the multiplexer.

### IP adress

Sets the IP address of the multiplexer, subnet mask and the gate address. The specified parameters are applied immediately after executing the command. Only the administrator can in-voke this command.

### Trusted nodes

This allows the user to set VLAN ID and VLAN priority. This adds four bytes to the MAC level (Level 2) of the Ethernet frame. These bytes contain information about VLAN ID and VLAN priority that can vary in the 0-7 range. The built-in switch of the multiplexer requires the priority to be equal to 6 or 7 to ensure the absolute priority. If the prioritization facilities of the additional equipment are used, any number can be used. In this case, the multiplexer just marks the E1 packets and the additional switches are responsible for prioritizing the traffic according to the VLAN data. Make sure that the E1 traffic has the highest priority in the local Ethernet network.

## Configure the E1 interface

### Port description

The interface description to easily identify the interface later on, for example «NGTS to 4200 port0».

### Destination IP

Sets the IP address of the multiplexer that the specified interface will be linked with.

### Destination E1 port

Sets the number of the interface of the remote multiplexer that the specified interface will be linked with.

### Payload size

Sets the size of data in a packet (should be divisible by 128); the default value is 256.

### Jitter buffer

Sets the size of the output queue in microseconds.

### Maximum gap

Sets the maximum extrapolation time of the output E1 stream. The possible range is 0 to 4000 ms.

### VLAN ID

The multiplexer is compliant with the IEEE 802.1p&Q standard. This allows the user to set VLAN ID and VLAN priority. This adds four bytes to the MAC level (Level 2) of the Ethernet frame. These bytes contain information about VLAN ID and VLAN priority that can vary in the 0-7 range. The built-in switch of the multiplexer requires the priority to be equal to 6 or 7 to ensure the absolute priority. If the prioritization facilities of the additional equipment are used, any number can be used. In this case, the multiplexer just marks the E1 packets and the additional switches are responsible for prioritizing the traffic according to the VLAN data. Make sure that the E1 traffic has the highest priority in the local Ethernet network.

### ToS

ToS (Type of Service) – is a byte of the IP header (Level 3) and in most cases contain-ing three fields: “PRECEDENCE” that is used to identify the priority of the datagram, “TOS” that is used to specify the way the network must choose between throughput, delay, reliability and cost, and the “MBZ” field that is currently unused and must be set to zero. The details can be found in RFC791, RFC1349 and RFC2474. The multiplexer allows setting the ToS IP byte to any value (specified in the hexadecimal format).
Example: If the binary values for IP PRECEDENCE and TOS are 101 and 1000 respectively, the resulting byte will be 10110000 or hexadecimal D0.

### E1 setup

This command is used to establish a virtual connection between the specified E1 interfaces of the local multiplexer and the remote one, specified by its MAC or IP address. The command can be executed only by the administrator and should be executed properly on both ends of the virtual connection. Sets the VLAN ID 802.1p for packets of the specified interface; the label is specified as a decimal number from 1 to 4095.

### E1 setup

This command is used to establish a virtual connection between the specified E1 interfaces of the local multiplexer and the remote one, specified by its MAC or IP address. The command can be executed only by the administrator and should be executed properly on both ends of the virtual connection. Sets the VLAN ID 802.1p priority bits for packets of the specified interface. The priority is specified by a decimal number from 0 to 7.

### Compressed

Enable compression mode for E1 streams/flows (traffic economy).

### Keyframe interval

Interval in ms between the packet transmissions with all timeslots in case the compression is enabled.

### Left slip bound,bits

The minimum value of jitter-buffer in bits (left border). Used for tracking overflow or desolation jitter-buffer.

### Right slip bound,bits

The maximum value of jitter-buffer in bits (right border). Used for tracking overflow or desolation jitter-buffer.

### Pkt's number for slip add

Addition interpolated packet to the base one when stealing is appeared and jitter-buffer is busy for a little (jitter-buffer desolation is not allowed).

### Pkt's number for slip rem

Rejection of packet when jitter-buffer is full and stealing is appeared (jitter-bubber overflow is not allowed).

### Recovery lost packets

The multiplexer can ask again the lost E1-packets. This function is turn on by default.

## Configure the Eth interface

### State

Current port status.

### Port description

Sets the symbolic description of the Ethernet interface. Description with Space symbols should be quoted.

### Port role

The interface can operate in one of the following modes:

down | The interface is down
trunk | Only tagged frames pass through. The interface in trunk mode is used to directly connect to another multiplexer
multi | The interface passes through all frames. This is the default mode, used if no other mode was explicitly specified. The interface usage policy is de-fined by external equipment, such as 3-rd level routers that link the mul-tiplexers
access | The interface is used to transfer user data. The packets with different VLAN ID are not routed to this interface. The packets that are received by this interface are tagged with the same ID as specified by the VLAN ID parameter

### Reservation mode

Inclusion/off RSTP.

### VLAN

A virtual LAN, commonly known as a VLAN, is a group of hosts with a common set of requirements that communicate as if they were attached to the Broadcast domain, regardless of their physical location. A VLAN has the same attributes as a physical LAN, but it allows for end stations to be grouped together even if they are not located on the same network switch. Network reconfiguration can be done through software instead of physically relocating devices.

### Port mode

Rate and duplex; one of the following: auto, half10, full10, half100, full100;

half duplex 10Mb/s | Connection is established, half duplex mode, 10 Mb/s rate
full duplex 10Mb/s | Connection is established, full duplex mode, 10 Mb/s rate
half duplex 100Mb/s | Connection is established, half duplex mode, 100 Mb/s rate
full duplex 100Mb/s | Connection is established, full duplex mode, 100Mb/s rate
full duplex 1000Mb/s | Connection is established, full duplex mode, 100M0b/s rate

### Secure mode

Security regime

no learn | For limited mac-address from the "white-list"
no | There is no restriction for anybody
mac | Access from the specific mac-address

### Priority mode

Priority calculation

tag | Priority is set according to VLAN tag
ip | Priority is set according to ipToS
tagip | Priority is set according to VLAN tag. If it is not set then priority is set according to ipToS
iptag | Priority is set according to ipToS. If it is not set then priority is set according to VLAN tag
no | Priority which is specified for current port is used

### Priority

Priority of packets. Direction to one of the queues for a packet.

### Rate limiting

Limits the incoming packet flow rate of the interface by the value following the switch, specified in Kbit/s. Default value is 0 which mean no limiting.

### IGMP

The Internet Group Management Protocol (IGMP) is a communications protocol used to manage the membership of Internet Protocol multicast groups. IGMP is used by IP hosts and adjacent multicast routers to establish multicast group memberships.

### Force VLAN mode

Appointment special VLAN for all packets.

### Smart VLAN mode

Isolation mode, when packets of one user are forbidden to transmit to the ports belonging to any user with the same VLAN.

### DHCP relay

Dynamic Host Configuration Protocol (DHCP) is a protocol used by networked devices (clients) to obtain the parameters necessary for operation in an Internet Protocol network. This protocol reduces system administration workload, allowing devices to be added to the network with little or no manual configuration.

### MAC number limit

Limiting on the number of MAC-address.

## Auxiliary port parameters

### Baud rate

The following settings are possible: 115200, 57600, 38400, 19200, 9600, 4800, 2400, 1200.

### Stop bits

The format of character transmission – the number of stop bits. The following settings are possible: 1, 1.5, 2.

### Parity

The format of character transmission – parity (padding to even or odd). The following settings are possible: NO, ODD, EVEN.

### Speed regulator mode

PID - using PID regulator mode

SA - using slipping average mode IA - iterative adaptation mode Default is PID.

### Spregv2 queue size

Use 256-512 for high-quality connections and 1024 for Wi-Fi connections. Min:1, Max:1024, Default:512.

### STM state

State of stm reciever:

- no link - check SFP Presence
- Loss of STM-1 Frame Alignment Word - check input level of signal
- ok - frame reciever is ok

### B1 Error counter

Count of errors in byte B1 (RSOH, see G.707 - 9.2.2.4)

### B2 Error counter

Count of errors in bytes B2 (MSOH, see G.707 - 9.2.2.8)

### B3 Error counter

Count of errors in byte B3 (Path BIP-8, see G.707 - 9.3.1.2)

### Signal Label C2

Maintenance status of the VC-4-Xc/VC-4/VC-3
Must be TUG Structure(0x02)
see G.707 - 9.3.1.3

### Error counter for BIP-2 code in byte V5

see G.707 - 9.3.2.1

### Remote SIP port

Remote SIP port
For example:
SprinterX(ip:x1.x2.x3.x4 sip:5060)----NAT(WAN IP:z1.z2.z3.z3;WAN port f<->x1.x2.x3.x4:5060)----SprinterY(ip:y1.y2.y3.y4; RemoteSipPort:f; dst ip z1.z2.z3.z4)
Where we are configuring SprinterY now

### Remote TDMoP port

Remote TDMoP port
For example:
SprinterX(ip:x1.x2.x3.x4 tdmop:41000)----NAT(WAN IP:z1.z2.z3.z3;WAN port f<->x1.x2.x3.x4:41000)----SprinterY(ip:y1.y2.y3.y4; Remote TDMoP Port:f; dst ip z1.z2.z3.z4)
Where we are configuring SprinterY now

### Local WAN IP

Example:
SprinterX(ip:x1.x2.x3.x4; wanIP=z1.z2.z3.z4)----NAT(WAN IP:z1.z2.z3.z4)----SprinterY(ip:y1.y2.y3.y4; connect e1 to z1.z2.z3.z4)
Where we are configuring SprinterX now