The Cisco 2600XM, 2691 and 3700 family of multiservice platforms is continually enhancing features to provide greater flexibility to Enterprises and Managed Network Service Providers. The new IP Communications High Density Digital Voice Network Module (NM-HDV2) delivers higher densities of digital voice connectivity combined with low-density analog voice connectivity as well as data and integrated access connectivity for enterprises and service providers implementing IP telephony or toll bypass. Supporting up to 120 voice channels for connection to PSTNS, PBXs, key systems, analog phones, and FAX machines, the NM-HDV2 modules deliver the industry's broadest combination of voice and data connectivity options in a single network module.
Digital voice connectivity is supported up to 4 T1 or 4 E1 ports. Mixed digital and analog/BRI voice connectivity is supported up to 2 T1 or 2 E1 ports in combination with one analog (FXS, FXO/CAMA, E&M, or DID) or BRI Voice Interface Card (VIC).
Q. What are the new IP Communications High Density Digital Voice Network Modules?
A. They are the NM-HDV2, NM-HDV2-1T1/E1 and the NM-HDV2-2T1/E1.
Q. Which platforms support the new NM-HDV2 Network Modules?
A. The NM-HDV2, NM-HDV2-1T1/E1 and NM-HDV2-2T1/E1 are supported on the Cisco 2600XM series and Cisco 2691, 3725 and 3745 platforms.
Q. Which legacy platforms do not support the new NM-HDV2 Network Modules?
A. The NM-HDV2, NM-HDV2-1T1/E1 and NM-HDV2-2T1/E1 are not supported on the Cisco 2600 series (261x, 262x, and 265x) and the Cisco 3600 series (362x, 364x, and 366x series) platforms.
Q. What are the major features of IP Communications High Density Digital Voice Network Modules?
A. The new IP Communications High Density Digital Voice Network Modules provide IP telephony gateway to Cisco AVVID architecture for calls to and from PSTN and the WAN. They also support connectivity to existing legacy telephony equipment such as PBXs, key systems, analog telephones and fax machines. Features include high-density digital voice and WAN connectivity up to 4 T1/E1 ports, analog connectivity up to 4 ports, BRI connectivity to 2 ports, and up to 50 conferencing and transcoding sessions (conferencing and transcoding will be supported in a future IOS release).
Q. Are the new IP Communications High Density Digital Voice Network Modules a replacement for the NM-HDV?
A. The new network modules are an enhancement of the NM-HDV, and provide a better value. Customers evaluating the NM-HDV should consider purchasing the new modules because of the additional benefits they bring. However, at this time, NM-HDV will continue to be supported on all existing platforms (Cisco 26/36/37xx series).
Q. How many IP Communications High Density Digital Voice Network Modules can be supported on the Multiservice Access platforms?
A. Cisco 2600XM series and Cisco 2691 Multiservice Access Platforms have one network module slot that can fit one IP Communications High Density Digital Voice Network module. The Cisco 3725 supports a maximum of two while the Cisco 3745 supports a maximum of four IP Communications High Density Digital Voice Network modules.
Q. What are Voice/WAN Interface cards?
A. Voice/WAN Interface cards or VWICs are daughter cards that slide into the NM-HDV2. They provide the interface to the PBX, the PSTN and/or WAN.
Q. Which Voice/WAN Interface (VWIC) cards are supported?
A. All existing digital VWIC cards that are supported on NM-HDV are supported on NM-HDV2. They are listed below.
Q. What are Voice Interface Cards?
A. Voice Interface cards or VICs are daughter cards that slide into the NM-HDV2, and provide the interface to telephony equipment (PBX, key systems, phones and fax machines) and the PSTN.
Q. Which Voice Interface cards are supported on the NM-HDV2 modules?
A. The entire family of next-generation Voice Interface Cards denoted by VIC2-xx is supported as listed below. In addition, VIC-4FXS/DID, VIC-2DID and VIC-1J1 are also supported.
Q. What are PVDMs?
A. The PVDMs are packet voice DSP modules that plug onto an NM-HDV2 module and provide the DSP resources for voice processing.
Q. Which PVDMs are supported on the NM-HDV2 family of modules?
A. The following PVDMs, all carrying the prefix "PVDM2," are supported. The number of channels indicated in the module name/description is based on the G.711 codec.
Q. Which codecs are supported by the NM-HDV2 modules?
A. The NM-HDV2 modules support G.711, medium, and high-complexity codecs.
Q. What codec complexity modes are supported by the NM-HDV2 modules?
A. The NM-HDV2 modules can be configured for medium complexity, high complexity or flex mode. The flex mode allows a flexible mixture of all codecs supported by NM-HDV2.
Q. How does the flex complexity mode work?
A. In the flex complexity mode, the software automatically selects an appropriate codec for each call while keeping track of available DSP resources. This mode provides greater flexibility in mixing codecs of various complexities on a single DSP or PVDM.
Q. Can the DSPs on an NM-HDV2 be shared by another NM-HDV2 module?
A. Yes. All the NM-HDV2s on a platform can be configured to share DSP resources among themselves (default is no sharing).
Q. Does the NM-HDV2 module support echo cancellation?
A. Yes. NM-HDV2 supports software echo cancellation compliant with the G.168 standard and with echo tail coverage up to 64 ms.
Q. Does the NM-HDV2 support integrated voice and serial WAN data access over the same T1?
Q. Does NM-HDV2 support integrated voice and serial WAN data access over PRI?
Q. How are the onboard T1/E1 ports configured?
A. The onboard ports may be configured as T1 or E1 via CLI. However, both ports must be of the same type.
Q. How many channel groups does the NM-HDV2 support?
A. The NM-HDV2 supports 32 channel groups with a total bandwidth of up to 2M.
Q. Which packet voice technologies are supported on the IP Communications High Density Digital Voice Network Modules?
A. VoIP (H.323, MGCP and SIP), VoFR, and VoATM (AAL5 and AAL2) are supported.
Q. When using multiple T1/E1 and BRI ports with the NM-HDV2, such as VWIC-2MFT-T1/E1 and VIC2-2BRI-NT/TE , what clocking options are supported?
A. i) The NM-HDV2 supports "network clock participate," i.e., it can slave to a central clocking module as well as provide recovered reference to that central module, ii) When it is not clock participating, the NM-HDV2 can provide local network clocking across its multiple T1/E1 ports, and iii) The NM-HDV2 can line-time one data-only trunks not participating in the time domain of the other voice trunks or mixed voice/data trunks without slips.
Q. What module should I use for DID features if the DID functionality on the VIC-4FXS/DID is not supported?
A. DID is supported using the VIC-2DID card.
Q. What are the key advantages of the NM-HDV2 over the NM-HDV?
A. The NM-HDV2 modules provide better value over the NM-HDV as shown below. They support up to double the channel/port density for T1 and E1 ports. They also support mixed analog and digital voice configurations. In addition, the NM-HDV2 modules feature next-generation DSPs that have greater memory and real-time capacity to support more features.
Q. How do we position the NM-HDV2 vs. NM-HD-2VE?
A. Both the NM-HDV2 and the NM-HD-2VE support mixed analog/BRI/digital voice connectivity. The NM-HD-2VE may be viewed as an analog voice network module that also supports low density digital voice (up to 24 medium complexity channels). The NM-HDV2 may be viewed as a high density digital voice network module (up to 120 MC channels) that also supports low density analog connectivity (up to 4 ports). Unlike the NM-HD-2VE, the NM-HDV2 also supports future growth via field-upgardable DSP modules. Lead with an NM-HDV2 for a primarily digital voice application, and with an NM-HD for a primarily analog voice application.
Q. What is the minimum Cisco IOS® software release required to support the IP Communications High-Density Digital Voice Network Modules?
A. The IP Communications High-Density Digital Voice Network modules are supported on IOS® release 12.3(7)T.
Q. What is the minimum Cisco IOS® software release required to support the conferencing and transcoding features on the IP Communications High-Density Digital Voice Network Modules?
A. The conferencing and transcoding features will be supported in a future IOS® release.
Q. On which Cisco IOS® images are the IP Communications High-Density Digital Voice Network Modules supported?
A. All IP Voice and higher images.
Q. What are the memory requirements for IP Communications High-Density Digital Voice Network Modules?
A. Please refer to the Cisco IOS® release notes.
Q. What is the minimum CCM software release that interoperates with NM-HDV2?
A. Cisco CallManager (CCM) Release 3.3(4).
Q. What is the minimum CCME software release that interoperates with NM-HDV2?
A. Cisco CallManager Express (Cisco CME) Release 3.1.
Q. Do the NM-HDV2 modules support bundles like the NM-HDV-1T1-24?
A. No. The NM-HDV2 modules must be ordered "a la carte"along with the required VICs/VWICs/PVDMs. This unbundled approach to ordering provides greater flexibility for customers as they can order any combination of modules to suit their unique needs. They can also order additional PVDMs for conferencing, transcoding, or for sharing across multiple NM-HDV2s.
Q. What are the product IDs and product description for the IP Communications High-Density Digital Voice Network Module?
A. The product IDs for the NM-HDV2 family of Voice Network Modules and associated VICs, VWICs, and PVDMs are listed below:
Posted: Fri Feb 20 18:22:03 PST 2004
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