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VWIC-1MFT-G703
- Description:
- 1-Port Multiflex Trunk Voice/WAN Int. Card - G.703
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VWIC-1MFT-G703 Overview
VWIC-1MFT-G703 is a WAN interface card engineered to support G.703 digital transmission protocols for reliable voice and data connectivity in enterprise and service provider networks. Designed as a modular WAN module, it offers dedicated support for G.703 applications while ensuring seamless installation in compatible Cisco routers, providing a robust solution for integrating legacy digital circuits into modern network infrastructures.
This module is ideally suited for environments that demand precise, standards-based digital connectivity and dedicated channel performance for voice and data transmissions. By enabling secure and stable WAN connections, the VWIC-1MFT-G703 proves invaluable for upgrading network interfaces and expanding the capacity of critical communication setups.
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Explore more options from Network Modules And Cards or explore other Cisco products.
VWIC-1MFT-G703 Specifications
| Product Type | WAN Module / WAN Interface Card |
| Module Type | WAN |
| Data Rate | N/A |
| Connector Type | N/A |
| Supported Protocols | G.703 |
| Form Factor | Modular |
| Operating Temperature | N/A |
| Storage Temperature | N/A |
| Input Voltage | N/A |
| Compatibility | Cisco |
| Max Speed | N/A |
| Supported Features | G.703 Standard Framing |
| Power Consumption | N/A |
| Interface Ports | N/A |
| Expansion Slots | N/A |
| Product Name | VWIC-1MFT-G703 |
| Height | N/A |
| Width | N/A |
| Depth | N/A |
| Weight | N/A |
VWIC-1MFT-G703 Use Case
Branch Office Converged Voice and Data over G.703 with VWIC-1MFT-G703-1-Port
Scenario: A distributed retail chain uses a Cisco ISR equipped with the VWIC-1MFT-G703-1-Port Multiflex Trunk Voice/WAN Interface Card - G.703 to transport both voice SIP traffic and corporate data over a single G.703 E1 circuit. By configuring the card in Multiflex Trunk mode, retailers consolidate PBX voice trunks and LAN data streams onto one leased line. Benefit: Reduces operational costs by eliminating separate data and voice circuits, simplifies network management, and enforces Cisco IOS QoS policies to maintain clear, low-jitter voice calls.
Financial Trading Floor High-Availability Voice Link with VWIC-1MFT-G703-1-Port
Scenario: A securities firm deploys dual Cisco routers with VWIC-1MFT-G703-1-Port cards at its trading floor to establish redundant G.703 E1 trunks to a centralized Cisco Unified Communications Manager cluster. The cards deliver sub-3 ms end-to-end latency for real-time trade execution calls and automatic failover ensures continuity. Benefit: Guarantees ultra-low-latency, regulation-compliant voice communications, seamless trunk redundancy, and centralized call control for critical financial operations.
Carrier-Grade PSTN Trunk Aggregation on Cisco ASR with VWIC-1MFT-G703-1-Port
Scenario: A national telecom provider integrates the VWIC-1MFT-G703-1-Port card into Cisco ASR 1001-X routers at POP sites to terminate TDM circuits from the PSTN. Each G.703 port aggregates up to 30 voice channels, which are transcoded and forwarded to the carrier’s SIP core network. Benefit: Delivers scalable, high-density TDM trunking, dynamic voice routing, and centralized management—optimizing network efficiency and reducing capital expenditure on legacy gateway hardware.
Quality Certifications
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Product Comparison Table
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| Compatibility | Cisco Routers | Cisco | Cisco Routers | Cisco | Cisco Routers |
| Connector Type | T1/E1 Interface | N/A | Modular G.703 Connector | N/A | RJ-48 |
| Data Rate | T1/E1 (1.544 Mbps / 2.048 Mbps) | 1.544/2.048 Mbps | 1.544Mbps/2.048Mbps | N/A | 1.544 Mbps / 2.048 Mbps |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Expansion Slots | VWIC Slot | N/A | VWIC Slot | N/A | EHWIC |
| Form Factor | Modular | Modular | Modular | Modular | Modular (EHWIC) |
| Height | N/A | N/A | N/A | N/A | N/A |
| Input Voltage | N/A | 3.3V | N/A | N/A | 3.3V |
| Interface Ports | 4 x T1/E1 Ports | N/A | G.703 | N/A | 2 x T1/E1 |
| Max Speed | T1/E1 speeds | 2.048Mbps | 1.544Mbps/2.048Mbps | N/A | N/A |
| Module Type | WAN | WAN | WAN | WAN | T1/E1 WAN Module |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | N/A | 0 to 70°C |
| Power Consumption | N/A | N/A | N/A | N/A | 5W |
| Product Name | VWIC3-4MFT-T1/E1 | VWIC3-1MFT-G703 | VWIC3-2MFT-G703 | VWIC-1MFT-G703 | VWIC2-2MFT-T1/E1 |
| Product Type | Network Module / Network Card | Network Module | Voice WAN Interface Card | WAN Module / WAN Interface Card | WAN Module |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | N/A | -40 to 85°C |
| Supported Features | Multi-Frame Transmission, Voice and Data Integration, Digital Signal Processing | N/A | G.703 framing, DS0 mapping | G.703 Standard Framing | Digital Voice, Loopback Testing, Framing Conversion |
| Supported Protocols | T1/E1 Framing and Signaling | G.703 | G.703 | G.703 | T1/E1 Framing |
| Weight | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | N/A | N/A | N/A |
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Questions & Answers
Q
What is the Cisco VWIC-1MFT-G703 card?
A
The Cisco VWIC-1MFT-G703 is a 1-port Multiflex Trunk Voice/WAN Interface Card that provides G.703 connectivity for voice and data over T1/E1 networks.
Q
Which Cisco routers support the VWIC-1MFT-G703?
A
The VWIC-1MFT-G703 is compatible with Cisco ISR G2 Series routers, including the 1900, 2900, and 3900 models equipped with a VWIC slot and an IOS image that supports G.703.
Q
What interfaces and protocols does the VWIC-1MFT-G703 support?
A
The VWIC-1MFT-G703 supports G.703 framing, clear-channel data, and circuit-switched voice over T1/E1, enabling both voice and WAN services on a single port.
Q
What data rates does the VWIC-1MFT-G703 support?
A
The VWIC-1MFT-G703 supports standard G.703 data rates of 64 kbps to 2.048 Mbps (E1) or 1.544 Mbps (T1) for clear-channel applications.
Q
How many voice sessions can the VWIC-1MFT-G703 handle?
A
The VWIC-1MFT-G703 supports up to 30 simultaneous voice channels on E1 or 24 channels on T1 when using G.711 codec in clear-channel mode.
Q
Can the VWIC-1MFT-G703 handle voice and data simultaneously?
A
Yes, the VWIC-1MFT-G703 combines voice and data on a single G.703 port, allowing simultaneous circuit-switched calls and clear-channel WAN traffic.
Q
What clocking options are available for the VWIC-1MFT-G703?
A
The VWIC-1MFT-G703 supports internal, network (line), and loopback clocking modes to synchronize T1/E1 timing in diverse network environments.
Q
Is the VWIC-1MFT-G703 card hot-swappable?
A
Yes, on supported Cisco ISR G2 platforms the VWIC-1MFT-G703 can be inserted or removed without powering down the router, enabling uninterrupted operations.
Q
Which cable type is required for the VWIC-1MFT-G703?
A
The VWIC-1MFT-G703 uses an RJ-48C (T1/E1) cable or SMB-to-RJ48 adapter to connect to standard G.703 network interfaces.
Q
How do I install the VWIC-1MFT-G703 on a Cisco router?
A
Power down the router, insert the VWIC-1MFT-G703 into an empty VWIC slot, secure it with the front-panel screw, then power on and verify with the IOS ‘show hw-module’ command.
Q
How do I configure G.703 on VWIC-1MFT-G703 in Cisco IOS?
A
Enter interface controller config mode (e.g., ‘controller E1 0/0/0’), set framing to G.703 with ‘framing g703’, specify clock source, then configure the subinterface for voice or data.
Q
Are there any licensing requirements for the VWIC-1MFT-G703?
A
No additional hardware licenses are required; ensure your router IOS image includes voice or multiservice WAN feature sets that support G.703.
Q
What are the dimensions and weight of the VWIC-1MFT-G703?
A
The VWIC-1MFT-G703 measures 6.9 × 4.8 × 0.7 inches (175 × 122 × 17 mm) and weighs approximately 0.2 pounds (0.09 kg).
Q
What is the power consumption of the VWIC-1MFT-G703?
A
The VWIC-1MFT-G703 consumes less than 5 W of power under typical load conditions, minimizing its impact on router power budgets.
Q
Can the VWIC-1MFT-G703 be used in high-availability setups?
A
Yes, you can deploy the VWIC-1MFT-G703 in redundant ISR chassis clusters with N+1 or N+N failover to ensure voice/WAN continuity.
Q
Where can I purchase genuine VWIC-1MFT-G703 cards?
A
Genuine VWIC-1MFT-G703 cards are available through authorized Cisco resellers, the Cisco e-commerce portal, and leading network hardware distributors.
Q
What warranty and support are provided for the VWIC-1MFT-G703?
A
The VWIC-1MFT-G703 is covered by Cisco’s standard lifetime warranty and technical support via TAC, with options for extended service contracts.
