MDS Orbit MCR-4G, Техническое руководство

Страница: 38 / 148

30 MDS Orbit MCR-4G Technical Manual MDS 05-6628A01, Rev. B
Cell
Understanding
The unit incorporates a 4G LTE module capable of operation on Verizon Wireless LTE/CDMA network
(LTE 700Mhz Band 13) in the United States. The unit supports routing of TCP/UDP/IP data from the Cel-
lular WAN network interface to any of the other network interfaces (including WiFi or LAN) using the
IPsec VPN or network address and port translation (NAPT) feature and to the COM1 (or COM2) serial port
using the terminal server service. The configuration of these uses cases is specified in respective sections
on VPN, Firewall and NAT, and Terminal Service.
The cellular modem inside the unit supports main (primary) and secondary antenna (for receive diversity).
The primary antenna must be installed for cell modem to register with the cellular network. It is strongly
recommended that secondary antenna be installed for achieving a robust cellular link. There should be no
physical obstructions around the antennas. The main and diversity antennas must have a minimum amount
of 27 dB isolation from each other to ensure optimal LTE mode operation of the module.
Cell Configuration Hierarchy
interface Cell {
cell-config {
apn <apn-name>
lte-recovery <true|false>
keep-alive {
address <host name or address>
interval <host name or address>
}
}
}
Access Point Name (APN)
After MCR has registered on the cellular network, it sets up the IP data connection with a specific Packet
Data Network identified by the Access Point Name (APN). APN is a string identifier.
The MCR comes preconfigured with APN of “vzwinternet”. Hence, it attempts to set up a data connection
toward internet PDN that provides internet connectivity. For this data connection to succeed, a SIM card
that has been provisioned for internet access needs to be obtained from the service provider and installed in
MCR.
If a private network (PN) account has been arranged with the service provider, a SIM card will be issued
from that account. When the modem is powered up with such a SIM, the default APN on the modem is auto-
matically updated by the service provider to the one that identifies the user’s private network. This proce-
dure is called OTA APN update. This procedure may not always succeed, and hence, requires the user to
manually update the APN on the MCR. The following example shows how to update APN manually via
CLI:
admin@(none) 15:28:44> config
Entering configuration mode private
[ok][2013-01-18 15:28:46]
[edit]
admin@(none) 15:28:46% set interfaces interface Cell cell-config apn GEDEROC.GW6.VZWENTP
[ok][2013-01-18 15:29:36]
[edit]
admin@(none) 15:29:36% commit
Commit complete.
[ok][2013-01-18 15:29:46]
[edit]
admin@(none) 15:29:46% exit