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- Description
- Specifications
Four DSPs sit on the PVDM-256K-16HD, a Cisco packet voice/fax DSP module from the PVDM-256K family, which is based on the C549 DSP chipset. The number in the part name is the channel count, and this module is the 16-channel size.
Capacity runs at 4 calls per DSP with medium-complexity codecs and 2 calls per DSP with high-complexity codecs. One module handles 16 medium-complexity or 8 high-complexity calls, and two modules handle 32 or 16.
Cisco 1700 Series routers take 1 or 2 PVDM-256K modules. On the Cisco 1751 and 1760 the module sizes are the PVDM-256K-4 with 1 DSP, PVDM-256K-8 with 2 DSPs, PVDM-256K-12 with 3 DSPs, PVDM-256K-16HD with 4 DSPs and PVDM-256K-20HD with 5 DSPs. The 1751 supports a maximum of 8 DSPs, or 32 channels. PVDM2 modules and PVDM-256K modules are different types, and they cannot be swapped for each other. More voice modules are in Cisco interface cards.
| Part number | PVDM-256K-16HD |
| Type | Packet voice/fax DSP module |
| Channels | 16 |
| DSPs | 4 |
| DSP chipset | C549 |
| Medium-complexity calls per DSP | 4 |
| High-complexity calls per DSP | 2 |
| Calls per module | 16 medium-complexity or 8 high-complexity |
| Modules per router | 1 or 2 (Cisco 1700 Series) |
| Sizes in the family | PVDM-256K-4, -8, -12, -16HD, -20HD (1, 2, 3, 4, 5 DSPs) |
| Interchangeable with PVDM2 | No |
| Compatible with | Cisco 1751 and Cisco 1760 routers |