the customer's current networking mode uses carrier e1 access. access switching equipment only supports e1 access. carriers currently want to use ims to provide services such as voice access, which needs to be resolved.
customer status:
at present, customers use 48 e1 e1 lines accessed on the e1 to perform voice exchange services and other service development. as mobile operators change their operational strategies, they only provide ims voice switching platforms based on ip networks. the user's early-stage business development is based on e1. in order to not affect the current business, it is necessary to use the gateway that supports e1 to ims to solve the current problem. mingdao communication products mdm has been connecting with mobile operators' ims softswitch platform in chongqing and hangzhou. can meet customer needs.
product description:
the mdm series signaling media gateway device is a relay media gateway that mingda communications provides to the voice service requirements of the enterprise/industry and operators, and that is highly cost-effective and has good protocol compatibility. the product belongs to the trunk media gateway (tmg) and is located between the circuit-switched network and the ip packet network. it is mainly used to resolve the signaling conversion between the digital trunk and the ip session, and realizes the digital trunk and voip sessions. the interconnection and intercommunication provide enterprises and industry users with convenient applications such as ip voice access, traffic convergence, and landing. the system can also communicate with the public network switching system through multiple signaling (china no. 1 signaling, pri, china no. 7 signaling).
mdm, as a key element in mingdao ngn solution, can provide interconnection between public switched telephone network (pstn) or integrated services digital network (isdn) and ip network.supports itu ss7 (isup/tup), ss1 (china r2/itu r2), and itu isdn (q.931/q.sig/pri). support sip protocol.
support voice connections between pstn and ip, pstn and pstn.
fax services support traditional voice methods.
support multi-point and multi-account registration to sip server.
support p2p unregistered relay mode and soft switch voice interaction.
embedded design, standard 1u chassis.
supports incoming calls on the pstn line. after routing and number change, the specified sip trunk is connected for voice communication.
no. 7 signaling supports the 14/24 bit code standard, supports traffic sharing between links and link groups, and supports multiple destination signaling point codes.
supports incoming calls on the ip line. after routing and number change, the specified pcm relay is connected for voice communication.
supports number change, caller id, and pstn/voip routing path.
supports audio codec formats g.711a, g.711u, and g.729a/b.
support dtmf mode rfc2833, sip info, inband.
supports signaling 7 (tup), isup, isdn (user side, network side), sip v2.0.
supports network protocols such as tcp/udp, http, arp/rarp, dns, ntp, tftp, telnet, and stun.
support static ip address modification, dns domain name resolution.
support administrator authentication to ensure the security of resources and data.
web-based ping testing can be performed.
you can modify the configuration, gateway services, kernel, and firmware upgrades through the web interface.
the syslog type supports error, warning, info, debug.
speech encoding supports g.711a/u, g.729, and g.726.
echo cancellation ec function.
with voice detection (vda).
with flow control technology comfort noise generation technology (cng).
➤ network and network management
static ip, direct local area network access, fixed ip address.
pppoe dial-up internet, dial-up internet access through adsl.
dhcp automatically obtains an ip address, direct local area network access, and dynamic ip address allocation.
based on web maintenance management. p, http, arp/rarp, dns, ntp, tftp, telnet, stun and other network protocols.
equipment shelves
● power on the device.
● the digital signal is connected to the e1 port through dedicated twisted pair or 75-2 coaxial access.
●lan1 port access lan.
● access the device through the lan, support web configuration or client configuration (optional one), configure the device (device ip address 192.168.0.100).
explanation:
in this solution, the mdm gateway and softswitch constitute the core of the company's internal call network. branch a uses the company's internal communication resources through the network, and branch b constitutes another hot standby redundant communication port for public network users. all communications within the enterprise can communicate over the ip network for free.
explanation:
in the ip multimedia call center, the mdm gateway cooperates with the softswitch to complete ip interworking in the ip network with the pstn or plmn network to implement ip telephony and public network user call services. public network registered ip phones can also call users on the pstn and plmn networks via mdm. the ip seats are deployed in different locations, unified outbound and incoming calls, saving the cost of calls and improving the competitiveness of ip multimedia call centers.
to meet the access of 48 e1s, the relay gateway equipment that each plan needs to invest.
plan a
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