DS1 DID/DOD/PBX Ports
Overview
What It Is
Frontier's Unbundled DS1 Port is an interface to our local switch for terminating digital PBX systems. We provision individual capabilities or rearrange them on DS0 channels within the DS1 interface. Some trunk and DID features are available on a location-specific basis only.
How It Works
This interface is provisioned on a first come, first served basis and is subject to facility availability.
Four-wire DSX-1 connections are used to tie you to Frontier's switching system. We synchronize these ports via a timing supply that is traceable to a stratum one clock. Each port is channelized into 24 DS0 channels at 56 Kbps each. The channels use supervisory signaling in conformance with loop reverse battery signaling specifications.
Description
The DS1 Port Interface provides a trunk port DS1 level electrical interface to the local switch for the termination of digital PBX systems. The service terminates in a collocation arrangement only. The interface supports in-band signaling control and line port capabilities to terminate digital PBX switch trunks on the local switch. Individual capabilities are provisioned and/or rearranged on associated DS0 channels within the DS1 interface.
Availability
DS1 DID/DOD PBX Port Service will be offered in all states within Verizon subject to the availability of facilities. Service will be provided on a first come, first served basis. If facilities are not available, the request will follow the held order procedure.
Pricing
DS1 DID/DOD trunk ports are orderable and chargeable to the service provider. The service provider is charged a non-recurring charge for installation, a service order charge and a recurring usage charge. The service provider can access the DS1 DID/DOD unbundled trunk port through its collocation arrangement.
Pricing and applicable USOCs may vary by state jurisdiction and pursuant to individual carrier interconnection agreements. See your federal and state tariffs for detailed information.
Features
Provides up to 24 trunks/channels
DID - WV
DID Station Numbers-WV.
The various unbundled Primary Rate Interface ISDN line port attributes are translations in the switch that support the following capabilities (additional charges may apply):
| Feature Name | Comments |
| Telephone Number | N/A |
| One Primary Listing | N/A |
| Additional Listings | N/A |
| Basic Intercept | N/A |
| Primary Interexchange Carrier | N/A |
| Caller ID | N/A |
| Trunk Group Options | N/A |
| Usage Recording | N/A |
| Daily Usage Tapes | N/A |
DS1 DID/DOD service consists of a 4-wire DSX-1 port associated with the trunk-port of a local switching system and the 4-wire DSX-1 cross-connect, and the repeater tie cable between the service provider's DSX-1 termination and the local switching system DSX termination.
DS1 DID/DOD ports are synchronized by Frontier using a timing supply that is traceable to a stratum one clock (described in ANSI T1.101). In WV, the Building Integrated Timing Supply (BITS) meets the 3E clock specifications in ANSI T1.101.
DS1 DID/DOD ports are channelized into twenty-four 56 Kbps DS0 channels. Each DS0 channel uses robbed bit supervisory signaling conforming to the loop reverse battery signaling (service provider installation- provided loop current feed) specifications in ANSI T1.403, Annex C.
Each DID/DOD DS0 channel uses the wink-start, immediate start, or delay dial call control protocol and either dial pulse (DP), Dual Tone Multi-Frequency (DTMF), or Multi-Frequency (MF) address signaling. DP address signaling is transmitted using the robbed bit supervisory signaling. DTMF and MF address signaling is transmitted along with other voiceband frequencies in the DS0 payload after being encoded using the 255 coding scheme described in ITU-T Recommendation G.711.
Diagrams
