Patton electronic G.SHDSL INTEGRATED 3086 - Manual (Page 52)

4 • Basic Application Configurations Model 3086 G.SHDSL Integrated Access Device User Guide
52 E1 Interface
installed at a Central Office should be set to CO. For point-to-point operation, one unit must be CO while the
other must be CP.
Switch S3-3: Transmit Clock Mode. Use Switches S3-3 to configure the 3086 for internal or external clock
mode.
Switch S3-6: Annex. Annex A and B offer spectral compatibility with T1 and E1 signals respectively, this fea-
ture reduces the interference between DSL lines and adjacent E1or T1 lines. For regions where E1 is used,
select Annex B.
Switch S3-7. Use S3-7 to configure the TDM interface for T1 or E1 service. Note that selecting E1 automati-
cally sets the E1 line rate to HDB3, line impedance to 120-ohms. Selecting T1 automatically sets the framing
to Extended Super Frame and B8ZS line code.
Switch S3-8. Switch S3-8 applies to E1 applications only. This switch selects whether the E1 link will use
CRC or not while in framed mode. In Clear Channel mode (unframed) this switch is ignored.
S3-3 Setting
Off CP
ON CO
S3-3 Clock mode
Off Internal. Transmit clock generated by the 3086
On External (network). DSL and E1 transmit clock derived from the received E1 signal
(available in CO mode only)
S3-6 Annex
Off Annex A
On Annex B
S3-7 Configuration
Off E1 mode (HDB3)
On T1 mode (ESF/B8ZS)
S3-8 Setting
Off E1 with CRC
ON E1 without CRC