Tayyab أصغر

• Leading the Infrastructure Team
• strong technical experience and success in coordinating the implementation and operation of network architecture solutions, preferably within financial services industries, and across multiple countries.Experience managing large scale enterprise Voice and Voice over IP (VoIP) solutions.Networking knowledge (i.e. routers and switches) and a strong understanding of VoIP products is required (i.e. various types of IP based voice products - Cisco CUCM Strong knowledge and experience supporting related voice technologies such as Voice Mail, , Voice Recording, Contact Centre, IP Network, Network Appliance, Video and Transport technologies (Switched Voice, IP, SIP etc) excellent analytical skills in voice fault investigation and resolution methodology
Extensive knowledge in VoIP transport such as SIP, Inter Cluster Trunking, Call Admission and Control mechanisms, centralization of call processing and Trunking services and network policy enforcement (i.e. QoS) Experience of voice and data network company transport such as; T1/E1, IP using Frame and private line networks. Have a working knowledge of IPv4 addressing and router components and functionality
• Resposible to manage the LAN/WAN
• Resposible to configure IPSec, QoS, PBR, Routing Protocols, HSRP, Firewall as per need of clients
• Configured Zimbra for a client
• Techincal Lead for the Global WAN Rollout of MAZARS Consulting.
• Responsible for giving ICT Solution to the clients
• Configured Juniper SSG-140 at KHI and ISB offices for IP/MPLS circuit between KHI and ISB.
• Design and Implement the network of CIMA’s Karchi office.
• Design and Implemented Asterisk based VoIP Project for NIB Bank (600 Users).
• Implemented Asterisk based VoIP PBX at MAZARS Singapore, MAZARS Indonesia and connected on SIP Trunk.
• Configured differnet make of Firewalls in many offices of MAZARS
• Configured open source Firewall Pfsens in Pakistan, Singapore and Malaysia in activae passive mode
• Configured load balancing through pfSense.
• Leading the Global WAN Roll out for MAZARS group in Asia Pacific region.
• Upgraded the IOS, Configured and Implemented PIX 520 firewall at MAZARS Indonesia.
• Implemtentation and configuration of Asterisk base IP soultion in MAZARS Singapore and MAZARS Indonesia.
• Good Knowledge of Cisco Unified Express, Call Manager, Unity and presence

• Responsible for configuration of DSLAM, MALC, Router, Switch, BRAS, AD3 in case of any change or new deployment.
• Responsible for the smooth operation of Access Network in South region
• Responsible for managing the all E1s, E3 and STM1 in South region which are connected to DSLAM, MALC and Routers.
• Responsible for Implementation and configuration of new media at DSLAM, MALC and routers
• Responsible for deployment of new DSLAM
• Configured MPLS L2/L3 VPN on Juniper
• Configured ALCATEL-LUCENT ISAM 7302
• Responsible for the smooth operation of 60 DSLAM and two MALC of Zhone in South region.
• Juniper M10i, Paradyne DSLAM 8820, Zhone MALC 719, ERX 1440 and ERX 310 is being used in South region
• Configuration of Cisco Routers like 7206, 7204, 7507, 3845, 3640, 2600 etc.
• Configuration of Juniper Routers like M7i, M10i, ERX 1440 and ERX 310.
• Configuration of switches like 2950, 3560, 3750 and Foundry Fast Iron SX 800.
• Configuration of ATM PARADYNE DSLAMS like 4200 and GranDslam 8820.
• Up-gradation of Firmware of different vendors according to the need.
• Involved in merging two networks of different companies during Merger.
• Configuring BGP with our up streams as well as IBGP in our Network.
• Deployed MPLS in our network, transported layer 2 and layer 3 traffic from one location to another location on MARTINI tunnels.
• Configured cisco routers to run PPPoE and PPPoA to aggregate our DSL customers on our BRAS.
• Responsible for making pre-activity and post-activity reports for any activity to be done in our network.

• Made the IP plan according to future growth of the Company
• Acquired own IP Address from APNIC and implement it on running network beore that we were using IP Address acuired from Liquid Telecom UK.
• Maintaining OSFP in Multi-Area Environment using Core Routers of Huawei NE-80 and NE-40 as well as Access Router AR-46-8.
• Implemented and maintaining Huawei DataCom NMS iManager 2000 Software to Manage 17 remote POPs including Packet loss & Jitter.
• Maintaing more than 150 E1s across various Cities of Pakistan
• H323 Interconnection with several operators across the world. Participation in GK-GK, GK-GW scenario design & implementation
• Establishing & maintaining smooth flow of Digital/Voice Traffic on International Private Leased Circuits & DS3
• Configuration of Soft Switch, Trunk Media Gateways, WAN Routers & Telecom Switches
• National PSTN & International PPP connectivity of media, using CCS7 technology & H323, of 14 POPS across Pakistan & 1 Pop in UK, with the National Core network located at Karachi
• Voice traffic, bandwidth monitoring and management
• H323 call control & flow, call signaling & troubleshooting in the real time digital transmission
• Providing Switching & Charging data services to Intelligent Networks (IN) Department
• Complete database creation and configuration of POPS across the Nationwide spreaded Callmate Network
• PSTN knowledge including CCS7, SIGTRAN & media understanding of PCM, DIU, DDF & LTG
• Complete understanding of H.323 Protocol suite & sub protocols including H.248, H.225 & H.245
• Real time protocols including RTP, RTCP, SIP, RAS signaling & messages
• SS7 protocols including MTP, M2UA & M3UA
• ISDN protocols & messages including Q931 & ISUP/TUP
• Configured Asterisk Server with A2Billing Software and interconnect with SX3000

• Actively participated in PRIs installation
• Participated in deployment of DSL.
• Team leader for DSL
• Configured and maintained DSLAM 8820, 8620 (Paradyne)
• Configured and maintained DSL Modem (Paradyne)
• Configured and maintained BRAS ( UTSTAR 1000)
• Configured ATM Switch (ASC)
• Upgraded Firmware of DSLAM
• Configured point to point and point to multipoint Frame Relay Circuits.
• Configured router for Frame relay
• Configured various monitoring tools
• Configured VPN on MS Windows 2000
• Managed Alteon switch and Cache Director
• Configured Data Circuit for various banks.
• SQL Server Backups & execution of Different Queries Through Query Analyzer.
• Management of Data Circuits related to various Banks
• Maintainence and Administration of Internet POP & SMTP Mail Servers
• Configured ISDN on Router
• Implementing Radio Wirless links at client site
• Worked on MAX TNT and AS5300 Access Server
• Configured Cylink Radio modem and WiFi wireless bridges
• Implementation of CEF on 7200 Cisco Router For Load Balancing on two Links
• Siemens SMA1K & FMUX & Pandatel Optical Fiber Transporter
• Generation and management of mrtg Graphs for Router & Machines